Herausgabe von Büchern

 

  • G. Schmahl, D. Rudolph, J. Thieme und E. Umbach (Hrsg.)
    X-ray Microscopy V
    Springer (Heidelberg 1998)
    1998
  • A. Haase, G. Landwehr und E. Umbach (Hrsg.)
    Röntgen Centennial: X-Rays Today in Natural and Life Sciences
    World Scientific Publ. (Singapore 1997)
    1997
  • H.-J. Freund and E. Umbach (Hrsg.)
    Adsorption on Ordered Surfaces of Ionic Solids and Thin Films
    Springer Series in Surface Science, Vol. 33, Springer (Heidelberg 1993)
    1993
  • E. Umbach, D. Menzel et al.
    Surface Science Index 1956 - 1977
    in: Physik Daten, Physics Data (1982), Nr. 24-1
    1982

 

 

Untersuchungen von organischen Grenzflächen und Dünnschichten



2009
  • M. Häming, J. Ziroff, E. Salomon, O. Seitz, D. Cahen, A. Kahn, A. Schöll, F. Reinert, and E. Umbach,
    Electronic band structure and ensemble effect in monolayers of linear molecules investigated by photoelectron spectroscopy
    PHYSICAL REVIEW B 79, 155418 (2009)
  • M. Haeming, C. Scheuermann, E. Umbach, A. Schöll, and F. Reinert,
    "Coverage dependent interaction studied by high-resolution PES & NEXAFS: SnPc (sub)monolayers on Ag(111)",
    Journal of Electron Spectroscopy and Related Phenomena, (in press).
  • M. Haeming, J. Ziroff, S. Hame, H. Shpaisman, O. Seitz, A. Salomon, D. Cahen, A. Kahn, A. Schöll, F. Reinert, and E. Umbach,
    "Photoemission investigation of alkyl self assembled monolayers: How UPS can provide structural information",
    (in press).
  • J. Ziroff, P. Gold, A. Bendounan, F. Forster, F. Reinert,
    "Adsorption energy and geometry of physisorbed organic molecules on Au(111) probed by surface-state photoemission",
    Surface Science, 603, 354-358 (2009).
  • M. Scholz, R. Schmidt, S. Krause, A. Schöll, F. Reinert, and F. Würthner,
    "Electronic structure of epitaxially grown thin films of bay-substituted perylenbisimide dyes",
    Applied Physics A: "Organic Materials for Electronic Applications", 95, 285 (2009).

 

2008

 

  • C. H. Schwalb, S. Sachs, M. Marks, A. Schöll, F. Reinert, E. Umbach, and U. Höfer,
    "Electron lifetime in a Shockley-type metal-organic interface state",
    Physical Review Letters, 101, 146801 (2008).
  • M. L. M. Rocco, M. Haeming, D. R. Batchelor, R. Fink, A. Scholl, and E. Umbach,
    "Electronic relaxation effects in condensed polyacenes: A high-resolution photoemission study",
    The Journal of Chemical Physics, 129, 074702 (2008).
  • S. Krause, M. B. Casu, A. Schöll, and E. Umbach,
    "Determination of transport levels of organic semiconductors by UPS and IPS",
    New Journal of Physics, 10, 085001 (2008).
  • L. Kilian, A. Hauschild, R. Temirov, S. Soubatch, A. Schöll, A. Bendounan, F. Reinert, T.-L. Lee, F. S. Tautz, M. Sokolowski, and E. Umbach,
    "A structural and electronic phase transition at a metal-organic interface: The role of intermolecular interactions",
    Physical Review Letters, 100, 136103 (2008).
  • O. Seitz, A. Vilan, H. Cohen, J. Hwang, M. Haeming, A. Schöll, E. Umbach, A. Kahn, and D. Cahen,
    "Doping Molecular Monolayers: Effects on electrical transport through alkyl chains on Si",
    Advanced Functional Materials, 18, 2102 (2008).
  • L. Kilian, A. Hauschild, R. Temirov, S. Soubatch, A. Schöll, A. Bendounan, F. Reinert, T.-L. Lee, F. S. Tautz, M. Sokolowski, and E. Umbach,
    "A structural and electronic phase transition at a metal-organic interface:The role of intermolecular interactions",
    Physical Review Letters 100, 136103 (2008)

 

2007

 

  • A. Bendounan, F. Forster, A. Schöll, D. Batchelor, J. Ziroff, E. Umbach, and F. Reinert,
    "Electronic structure of 1 ML NTCDA/Ag(111) studied by photoemission spectroscopy",
    Surface Science, 601(18):4013-4017, 2007.
  • C. Stadler, S. Hansen, A. Schöll, C. Kumpf, E. Umbach,
    "Molecular distorsion of NTCDA upon adsorption on Ag(111): A normal incidence x-ray standing wave study",
    New Journal of Physics 9 (2007) 50.

 

2006

 

  • H. Marchetto, U. Groh, Th. Schmidt, R. Fink, H.-J. Freund, and E. Umbach,
    "Influence of Substrate Morphology on Organic Layer Growth: PTCDA on Ag(111)",
    Chem. Phys. (2006), in press.
  • L. Kilian, U. Stahl, M. Sokolowski, R. Fink, and E. Umbach,
    "The Commensurate to Incommensurate Transition of an Organic Monolayer: a High Resolution LEED Analysis of the Superstructures of NTCDA on Ag(111)",
    Surf. Sci. (2006), submitted.
  • M. Schneider, E. Umbach, and M. Sokolowski,
    "Growth-dependent optical properties of 3,4,9,10-perylenetetracarboxylicacid-dianhydride (PTCDA) films on Ag(111)",
    Chemical Physics, Volume 325, Issue 1, 9 June 2006, Pages 185-192
  • L. Kilian, E. Umbach, and M. Sokolowski,
    "A refined structural analysis of the PTCDA monolayer on the reconstructed Au(111) surface - "Rigid or distorted carpet?"",
    Surface Science, Volume 600, Issue 13, 1 July 2006, Pages 2633-2643
  • Y. Zubavichus, M. Zharnikov, Y.-J. Yang, M. Grunze, O. Fuchs, E. Umbach, and C. Heske,
    "Oxygen K-edge XAFS Studies of Vacuum-deposited Ice Films",
    Langmuir, 22, 7241-7247 (2006)
  • S. Kera, M.B. Casu, A. Schöll, D. Batchelor, T. Schmidt, E. Rühl, and E. Umbach,
    "High-Resolution Inner-shell Excitation Spectroscopy of Large  -Conjugated Molecules: H2-Phthalocyanine",
    J. Chem. Phys.  125, 014705 (2006).
  • C. Stadler, S. Hansen, F. Pollinger, C. Kumpf, E. Umbach, T.-L. Lee, J. Zegenhagen,
    Structural investigation of the adsorption of SnPc on Ag(111) using normal incidence x-ray standing waves,
    Phys. Rev. B 74, 035404 (2006).
  • F. Amy, C.K. Chan, W. Zhao, A. Kahn, M. Ono, N. Ueno, D. Cahen, L. Kronik, G. Nesher, A. Salomon, L. Segev, O. Seitz, H. Shpaisman, A. Schöll, M. Häming, and E. Umbach,
    "Radiation Damage in Alkyl Chain Monolayers on Semiconductor Substrates Investigated by Electron Spectroscopy",
    J. Phys. Chem. B, 110 (43), 21826 -21832, 2006.
  • Y. Zou, L. Kilian, A. Schöll, Th. Schmidt, R. Fink, and E. Umbach,
    "Chemical Bonding of PTCDA on Ag Surfaces and the Formation of Interface States",
    Surf. Sci. 600 (2006) 1240-1251.
  • Chem. Phys. Lett. 415 (2005) 188-192. N. Dori, M. Menon, L. Kilian, L. Kronik, and E. Umbach,
    "Valence Electronic Structure of Gas Phase 3,4,9,10-perylenetetracarboxylic-acid-dianhydride (PTCDA): Experiment and Theory",
    Phys. Rev.B 73 (2006) 195208-1-6.
  • S. Kera, M.B. Casu, K.R. Bauchspieß, D. Batchelor, Th. Schmidt, and E. Umbach,
    "Growth Mode and Molecular Orientation of Phthalocyanine Molecules on Metal Single Crystal Substrates: a NEXAFS and XPS Study",
    Surf. Sci. 600 (2006) 1077-1084.

 

2005

 

 

  • E. Hollauer, E. D. Prucole, M. L. M. Rocco, A. D. P. Netto, A. Schöll, and R. Fink,
    "Configuration interaction simulation of the NEXAFS photoabsorption spectrum of naphthalene",
    Journal of the Brazilian Chemical Society 16, 31 (2005)
  • D. Hübner, F. Holch, M.L.M. Rocco, K.C. Prince, S. Stranges, A. Schöll, E. Umbach and R. Fink,
    "Isotope Effects in High-Resolution NEXAFS Spectra of Naphthalene",
    Chem. Phys. Lett. 415 (2005) 188-192.
  • J. Thomson, V. Arima, Y. Zou, E. Umbach, R. Fink, R. Cingolani, and R.I.R. Blyth,
    "3d and 4d Resonant Photoemission from Rare-earth Organic Complexes: Gadolinium- and Dysprosium-tris8-hydroxyquinolines",
    Synth. Met./JES (2005), submitted.
  • D. Cahen, A. Kahn, and E. Umbach,
    "Energetics of Molecular Interfaces",
    Materials Today, July/August (2005) 32-41 (cover story).
  • A. Schöll, Y. Zou, D. Huebner, S. G. Urquhart, Th. Schmidt, R. Fink, and E. Umbach,
    "A comparison of fine structures in high-resolution x-ray absorption spectra of various condensed organic molecules",
    J. Chem. Phys. 123 (2005) 044509.
  • Y. Zubavichus, M. Zharnikov, Y. Yang, O. Fuchs, C. Heske, E. Umbach, G. Tzvetkov, F.P. Netzer, and M. Grunze,
    "Surface Chemistry of Ultrathin Films of Histidine on Gold as Probed by High-resolution Synchrotron Photoemission",
    J. Phys. Chem. B 109 (2005) 884-891.

 

2004

 

  • X. Ma, H. L. Meyerheim, J. Barthel, J. Kirschner, S. Schmitt, and E. Umbach,
    "Self-assembled magnetic nanostripes by organic patterning",
    Appl. Phys. Lett. 84, 4038 (2004)
  • A. Schöll, D. Hübner, T. Schmidt, S.G. Urquhart, R. Fink, E. Umbach,
    "Anharmonicity of the core-excited state potential of an organic molecule from NEXAFS vibronic fine structure".
    Chemical Physics Letters 392 (2004) 297.
  • A. Schöll, Y. Zou, T. Schmidt, R. Fink, and E. Umbach,
    "Line shapes and satellites in high-resolution x-ray photoelectron spectra of large B-conjugated organic molecules",
    J. Chem. Phys. 121 (2004) 10260-10267.
  • Y. Zubavichus, M. Zharnikov, Y. Yang, O. Fuchs, E. Umbach, C. Heske, A.Ulman, and M. Grunze,
    "X-ray Photoemission and Near Edge X-ray Absorption Finestructure Study of Water Adsorption on Pyridine-Terminated Thiolate Self-Assembled Monolayers",
    Langmuir 20 (2004) 11022.
  • J. Thomson, V. Arima, Y. Zou, R. Fink, E. Umbach, R. Cingolani, and R.I.R. Blyth,
    "Systematics of the 4f Binding Energy in a Series of Rare-Earth Organic Complexes Determined by Resonant Photoemission",
    Phys. Rev. B 70 (2004) 153104.
  • A. Schöll, Y. Zou, T. Schmidt, R. Fink, and E. Umbach,
    "High-resolution photoemission study of different NTCDA monolayers on Ag(111): bonding and screening influences on the line shapes",
    J. Phys. Chem. B 108 (2004) 14741-14748.
  • L. Kilian, E. Umbach, and M. Sokolowski,
    "Molecular Beam Epitaxy of Organic Films Investigated by High Resolution Low Energy Electron Diffraction (SPA-LEED: 3,4,9,10-perylene-tetracarboxylicacid-dianhydride (PTCDA) on Ag(111)",
    Surf. Sci. 573 (2004) 359-378.
  • Y. Zubavichus, M. Zharnikov, A. Shaporenko, O. Fuchs, L. Weinhardt, C. Heske, E. Umbach, J.D. Denlinger, and M. Grunze,
    "Soft X-ray-Induced Decomposition of Phenylalanine and Tyrosin: a Comparative Study",
    J. Phys. Chem. A 108 (2004) 4557-4565.
  • G. Tzvetkov, G. Koller, Y. Zubavichus, O. Fuchs, M.B. Casu, C. Heske, E. Umbach, M. Grunze, M.G. Ramsey, and F.P. Netzer,
    "Bonding and Structure of Glycine on Ordered Al2O3 Surfaces",
    Langmuir 20 (2004) 10551-10559.
  • J. Stanzel, W. Weigand, L. Kilian, H.L. Meyerheim, C. Kumpf, and E. Umbach,
    "Chemisorption of NTCDA on Ag(111): A NIXSW Study Including Non-Dipolar and Electron-Stimulated Effects",
    Surf. Sci. Lett. 581 (2004) L311-318.
  • X. Ma, H.L. Meyerheim, J. Barthel, J. Kirschner, S. Schmitt, and E. Umbach,
    "Self-Assembled Magnetic Nanostripes by Organic Patterning",
    Appl. Phys. Lett. 84 (2004) 4038-4040.
  • A. Schöll, D. Hübner, T. Schmidt, R. Fink, and E. Umbach,
    "Vibronic Fine Structure in the High-Resolution O-K NEXAFS Spectra of a Large Organic Molecule (in the condensed phase)",
    Chem. Rev. Lett. 392 (2004) 297-302.
  • Y. Zubavichus, O. Fuchs, L. Weinhardt, C. Heske, E. Umbach, J. Denlinger, and M. Grunze,
    "Soft X-ray Induced Decomposition of Amino Acids: a Time-Resolved XPS, Mass-Spectrometry, and NEXAFS Study",
    Radiation Research 161 (2004) 346.
  • A. Schöll, Y. Zou, D. Hübner, D. Gador, C. Jung, S.G. Urquhart, T. Schmidt, R. Fink, and E. Umbach,
    "Electron-Vibron Coupling in the High-Resolution X-ray Absorption Spectra of Organic Materials: NTCDA on Ag(111)",
    Phys. Rev. Lett. 93 (2004) 146406.
  • W. Gebauer, A. Langner, M. Schneider, M. Sokolowski, and E. Umbach,
    "Exciton dispersion in a  -conjugated oligomer film: -quaterthiophene on highly oriented pyrolytic graphite and Ag(111)",
    Phys. Rev. B 69 (2004) 125420.

 

2003

 

  • E. Hollauer, M.L. Rocco, A.D. Pereira Netto, A. Schöll, R. Fink:
    "Configuration Interaction Simulation of the Photoabsorption Spectrum of Naphthalene".
    Journal of the Brazilian Chemical Society (2003) 239.
  • R. Fink, D. Hübner, A. Schöll, E. Umbach, K.C. Prince, R. Richter, M. Coreno, M. Alagia:
    "Electron-vibron coupling in large organic molecules".
    ELETTRA Highlights (2003) 51.
  • R.I.R. Blyth, J. Thomson, V. Arima, Y. Zou, R. Fink, E. Umbach, G. Gigli, and R. Cingolani,
    "Occupied and Unoccupied States of the Organic Infra-red Emitters Yb- and Er-tris(8-hydroxyquinoline) Studied by Photoemission and X-ray Absorption",
    Mater. Sci. Eng., B 105, 40 (2003).
  • J. Thomson, R.I.R. Blyth, V. Arima, Y. Zou, R. Fink, E. Umbach, G. Gigli, and R. Cingolani,
    "4f Energies in an Organic-Rare Earth Guest-Host System: The Rare Earth Tris-8-hydroxyquinolines",
    Mat. Sci. Eng. B 105 (2003) 41-43.
  • R.I.R. Blyth, J. Thomson, Y. Zou, R. Fink, E. Umbach, G. Gigli, and R Cingolani,
    "Characterization of Thin Films of the Organic Infra-red Emitters Yb- and Er-tris(8-hydroxyquinoline) by X-ray Photoemission Spectroscopy",
    Synth. Metals 139 (2003) 207-213.
  • V. Wagner, T. Muck, J. Geurts, M. Schneider, and E. Umbach,
    "Raman Analysis of First Monolayers of PTCDA on Ag(111)",
    Appl. Surf. Sci. 212/213 (2003) 520-524.
  • L. Chkoda, M. Schneider, V. Shklover, L. Kilian, M. Sokolowski, C. Heske, and E. Umbach,
    "Temperature-dependent Morphology and Structure of Ordered 3,4,9,10-perylene-tetracarboxylicacid-dianhydride (PTCDA) Thin Films on Ag(111)",
    Chem. Phys. Lett. 371 (2003) 548-552.
  • A. Schöll, R. Fink, E. Umbach, G.E. Mitchell, S.G. Urquhart, and H. Ade,
    "Towards a Detailed Understanding of the NEXAFS Spectra of Bulk Polyethylene Copolymers and Related Alkanes",
    Chem. Phys. Lett. 370 (2003) 834-841.

 

2002

 

  • H.G.O. Sandberg, G.L. Frey, M.N. Shkunov, H. Sirringhaus, R.H. Friend, M.M. Nielsen, C. Kumpf,
    "`Ultrathin regioregular poly(3-hexyl thiophene) field effect transistors"'
    Langmuir 18, 10176 (2002).
  • M. Schneider, M. Brinkmann, M. Muccini, F. Biscarini, C. Taliani, W. Gebauer, M. Sokolowski, and E. Umbach,
    "Morphology and Trap Luminescence in Thin Oligothiophene Films on HOPG",
    Chem. Phys. 285 (2002) 345-353.
  • L. Kilian, W. Weigand, E. Umbach, A. Langner, M. Sokolowski, H. Maltor, H. Meyerheim, B. Cowie, and T. Lee,
    "Adsorption site determination of a large  -conjugated molecule by NIXSW: end-capped-quater-thiophene on Ag(111)"
    Phys. Rev. B 66 (2002) 75412.
  • F.S. Tautz, M. Eremtchenko, Y. Shostak, J.A. Schäfer, V. Shklover, M. Sokolowski, and E. Umbach,
    "Strong Electron-Phonon Coupling at a Metal/Organic Interface: PTCDA/Ag(111)",
    Phys. Rev. B 65 (2002) 125405-1-10.
  • E. Umbach and R. Fink,
    "How to Control the Properties of Interfaces and Thin Films of Organic Molecules?",
    Proc. Intl. School Enrico Fermi, eds. G. La Rocca and V. Agranovich, North Holland (2002) 233-252.
  • F.S. Tautz, M. Eremtchenko, J.A. Schäfer, M. Sokolowski, V. Shklover, K. Glöckler, and E. Umbach,
    "A Comparison of the Chemisorption Behaviour of PTCDA on Different Ag Surfaces",
    Surf. Sci. 502-503 (2002) 176-184.

 

2001

 

  • V. Shklover, S. Schmitt, E. Umbach, F.S. Tautz, M. Eremtchenko, Y. Shostak, J.A. Schaefer, and M. Sokolowski,
    "Strong K-induced Changes in PTCDA Films on Ag(110) Studied by HREELS and LEED",
    Surf. Sci. 482 (2001) 1241-1248.

 

2000

 

  • H.L. Meyerheim, T. Gloege, M. Sokolowski, P. Bäuerle, and E. Umbach,
    "Adsorption-induced Distortion of a Large p-conjugated Molecule Studied by Surface X-ray Diffraction: Quaterthiophene on Ag(111)",
    Euro Phys. Lett. 52 (2000) 144-150
  • F.S. Tautz, S. Sloboshanin, V. Shklover, R. Scholz, M. Sokolowski, J.A. Schäfer, and E. Umbach,
    " Substrate Influence on the Ordering of Organic Submonolayers: A Comparative Study of PTCDA on Ag(110) and Ag(111) Using HREELS",
    Appl. Surf. Sci. 166 (2000) 363-369.
  • M. Muccini, M. Schneider, C. Taliani, M. Sokolowski, E. Umbach, D. Beljonne, J. Cornil, and J.L. Bredas,
    "Chain Length Dependence of Interchain Splitting in Electroluminescent Organic Conjugated Materials",
    Phys. Rev. B 62 (2000) 6296-6300.
  • H.L. Meyerheim, T. Gloege, H. Maltor, M. Sokolowski, P. Bäuerle, and E. Umbach,
    "Bond Stretching and Distortion in Large Organic Molecules on Ag(111) Determined by Surface X-ray Diffraction",
    Surf. Rev. Lett. 6 (2000) 883.
  • L. Chkoda, C. Heske, M. Sokolowski, and E. Umbach,
    "Improved Band Alignment for Hole Injection by an Interfacial Layer: TPD on PTCDA on ITO",
    Appl. Phys. Lett. 77 (2000) 1093-1095.
  • F.S. Tautz, S. Sloboshanin, V. Shklover, R. Scholz, M. Sokolowski, J.A. Schäfer, and E. Umbach,
    "Vibrational Properties of Ultrathin Quasi-epitaxial PTCDA Films on Ag(110)",
    Phys. Rev. B 61 (2000) 16933.
  • M. Bäßler, R. Fink, C. Buchberger, P. Väterlein, M. Jung, and E. Umbach,
    "Near Edge X-ray Absorption Fine Structure Resonances of Quinoide Molecules",
    Langmuir, 16 (2000) 6674-6681.
  • P. Väterlein, M. Schmelzer, J. Taborski, T. Krause, F. Viczian, M. Bäßler, R. Fink, and E. Umbach,
    "Orientation and Bonding of Thiophene and 2,2'-Bithiophene on Ag(111): A Combined NEXAFS and Xa-Scattered Wave Study",
    Surf. Sci. 452 (2000) 20-30.
  • V. Shklover, F.S. Tautz, R. Scholz, S. Sloboshanin, M. Sokolowski, J.A. Schäfer, and E. Umbach,
    "Differences in Vibronic and Electronic Excitations of PTCDA on Ag(111) and Ag(110)",
    Surf. Sci. 454-456 (2000) 60-66.
  • L. Chkoda, C. Heske, M. Sokolowski, E. Umbach, F. Steuber, J. Staudigel, M. Stößel, and J. Simmerer,
    "Work Function of ITO Substrates and Band-offsets at the TPD/ITO Interface Determined by Photoelectron Spectroscopy",
    Synth. Metals 111-112 (2000) 315-319.
  • U. Zimmermann, G. Schnitzler, V. Wüstenhagen, N. Karl, R. Dudde, E.-E. Koch, and E. Umbach,
    "NEXAFS and ARUP Spectroscopy of an Organic Single Crystal: a-Perylene."
    Mol. Cryst. Liqu. Cryst. 339 (2000) 231-259.

 

1999

 

  • M. Hopmeier, W. Gebauer, M. Oestreich, M. Sokolowski, R. Mahrt, and E. Umbach,
    "Relaxation Dynamicsof Excitons in Thin Quaterthiophene Films on Different Substrates",
    Chem. Phys. Lett. 314 (1999) 9-15.
  • M. Sokolowski and E. Umbach,
    "Organic Epitaxy Aids Molecular Electronics",
    Vacuum Solutions, July (1999) 15-18.
  • R. Fink, D. Gador, U. Stahl, Y. Zou, and E. Umbach,
    "Substrate-dependent Lateral Order in NTCDA Monolayers",
    Phys. Rev. B. 60 (1999) 2818-2826
  • F. Baier, F., v.Ludewig, A. Soukopp, C. Väterlein, J. Laubender, P. Bäuerle, M. Sokolowski, and E. Umbach,
    "A Combined Photoelectron and Capacity-Voltage Investigation of the Aluminium/Oligo-thiophene Interface",
    Optical Materials 12 (1999) 285-290.
  • D. Gador, Y. Zou, C. Buchberger, M. Bertram, R. Fink, and E. Umbach,
    "NEXAFS Investigations of NTCDA Monolayers on Different Metal Substrates",
    J. Electron Spectrosc. 101-103 (1999) 523-528.
  • D. Gador, C. Buchberger, A. Soukopp, M. Sokolowski, R. Fink, and E. Umbach,
    "Interaction of Magnesium with Oriented Diphenyl-carbonate Films",
    J. Electron Spectrosc. 101-103 (1999) 529-535.

 

1998

 

  • M. Böhringer, W.-D. Schneider, K. Glöckler, E. Umbach, and R. Berndt,
    "Adsorption Site Determination of PTCDA on Ag(111) by Manipulation of Adatoms",
    Surf. Sci. Lett. 419 (1998) L95-L99.
  • C.S. Rastomjee, M. Keil, H. Sotobayashi, A.M. Bradshaw, C.L.A. Lamont, D. Gador und E. Umbach,
    "Aluminium Metallisation of Ar and Oxygen Plasma-Modified Polycarbonate Thin Film Surfaces",
    Appl. Surf. Sci. 136 (1998) 280-297.
  • U. Stahl, D. Gador, A. Soukopp, R. Fink und E. Umbach,
    "Coverage-dependent Superstructures in Chemisorbed NTCDA Monolayers: A Combined LEED and STM Study",
    Surf. Sci. 414 (1998) 423-434.
  • D. Gador, C. Buchberger, R. Fink und E. Umbach,
    "Characterization of High-quality NTCDA Films on Metal Substrates",
    J. Electron Spectrosc. 96 (1998) 11-17.
  • E. Umbach, R. Fink und P. Väterlein,
    "Synchrotron-Radiation Studies of Highly-Ordered Organic Adsorbates and Thin Films",
    Poverkhnost 8-9 (1998) 162-168.
  • A. Soukopp, K. Glöckler, P. Kraft, S. Schmitt, M. Sokolowski, E. Umbach, E. Mena-Osteritz, P. Bäuerle und E. Hädike,
    "Superstructure Formation of Large Organic Adsorbates on a Metal Surface: A Systematic Approach Using Oligothiophenes on Ag(111)",
    Phys. Rev. B 58 (1998) 13882-13894.

 

 

  • E. Umbach, K. Glöckler und M. Sokolowski,
    "Surface-'Architecture' with Large Organic Molecules: Interface Order and Epitaxy",
    Surf. Sci. 402-404 (1998) 20-31.
  • D. Gador, R. Fink und E. Umbach,
    "'Manipulation' of Molecular Orientation in Ultrathin Organic Films: NTCDA on Ag(111)",
    Europhys. Lett. 41 (1998) 231-236.
  • M. Keil, C.S. Rastomjee, A. Rajagopal, H. Sotobayashi, A.M. Bradshaw, C.L.A. Lamont,D. Gador, C. Buchberger, R. Fink und E. Umbach,
    "Argon Plasma-induced Modifications at the Surface of Polycarbonate Thin Films",
    Appl. Surf. Sci. 125 (1998) 273-283.
  • M. Böhringer, W.-D. Schneider, R. Berndt, K. Glöckler, M. Sokolowski und E. Umbach,
    "Corrugation Reversal in Scanning Tunneling Microscope Images of Organic Molecules",
    Phys. Rev. B57 (1998) 4081-4087.
  • K. Glöckler, C. Seidel, A. Soukopp, M. Sokolowski, E. Umbach, M. Böhringer, R. Berndt und W.-D. Schneider,
    "Highly Ordered Structures and Submolecular STM Contrast of PTCDA and DM-PBDCI on Ag(111) and Ag(110)",
    Surf. Sci.  405 (1998) 1-20.
  • M. Keil, C.S. Rastomjee, A. Rajagopal, C.L.A. Lamont, H. Sotobayashi, A.M. Bradshaw, D. Gador und E. Umbach,
    "Interface Processes in the Adhesion of Aluminium with Untreated and Plasma-activated Polycarbonate Surfaces",
    in: Applications of Surface and Interface Analysis,Hrsg.: I. Olefgord, L. Niborg und D. Briggs, (Wiley, Chichester 1998), p.739-741.

 

1997-1989

 

  • E. Umbach, R. Fink, M. Jung, P. Väterlein, J. Taborski und M. Sokolowski,
    "Electronic Structure of Highly-Ordered Adsorbate Layers of Large Organic Molecules",
    Poverkhnost 4-5 (1997) 105-122.
  • M. Bäßler, R. Fink, C. Buchberger, D. Gador, C. Heske, J. Müller, P. Väterlein, J.U. von Schütz und E. Umbach,
    "NEXAFS Investigations on Highly-ordered Ultrathin Films of DMe-DCNQI on Single Crystal Surfaces",
    J. Physique IV France 7 (1997) C2-531.
  • C. Seidel, A. Soukopp, P. Bäuerle und E. Umbach,
    "Long-range Ordered, Commensurate Superstructures of Large Organic Adsorbates: A LEED and STM Study of EC4T/Ag(111)",
    Surf. Sci. 374 (1997) 17-30.
  • P. Bäuerle, M. Hiller, S. Scheib, M. Sokolowski, and E. Umbach,
    "Post-Polymerization Functionalization of Conducting Polymers: Novel Poly(alkylthiophene)s Substituted with Easily Replaceable Activated Ester Groups",
    Adv. Mater. 8 (1996) 214-218.
  • C. Väterlein, B. Ziegler, W. Gebauer, H. Neureiter, M. Stoldt, M.S. Weaver, P. Bäuerle, M. Sokolowski, D.D.C. Bradley, and E. Umbach,
    "Electrical Conductivity and Oxygen Doping of Vapour-Deposited Oligothiophene Films",
    Synth. Metals 76 (1996) 133-136.
  • P. Väterlein, T. Krause, M. Bäßler, R. Fink, E. Umbach, J. Taborski, V. Wüstenhagen, and W. Wurth,
    "Adsorption-Induced Bending of a Triatomic Molecule: NEXAFS Investigation of N2O Adsorbed on Different Ni(111) Surfaces",
    Phys. Rev. Lett. 76 (1996) 4749-4752
  • E. Umbach, M. Sokolowski und R. Fink,
    "Substrate Interaction, Long-range Order, and Epitaxy of Large Organic Adsorbates",
    Appl. Phys. A 63 (1996) 565-576.
  • A. Soukopp, K. Glöckler, P. Bäuerle, M. Sokolowski und E. Umbach,
    "High Order and Submolecular Imaging of Endcapped-Quinque-Thiophene on Ag(111)",
    Adv. Mat. 8 (1996) 902-906.
  • A. Soukopp, C. Seidel, R. Li, M. Bässler, M. Sokolowski und E. Umbach,
    "Highly Ordered Ultrathin Films of Quaterthiophene on a Ag(111) Surface",
    Thin Solid Films 284/285 (1996) 343-346
  • M. Bässler, R. Fink, C. Heske, J. Müller, P. Väterlein, J.U. von Schütz und E. Umbach,
    "NEXAFS Investigations of Highly Ordered Ultrathin Films of  DMe-DCNQI on Ag(111)",
    Thin Solid Films 284/285 (1996) 234-237.
  • U. Baston, M. Jung und E. Umbach,
    "Different Bonding Configurations of the Aromatic Anhydride NDCA on Ni(111) and O/Ni(111): A Photoemission and TDS Study",
    J. Electron Spectr. 77 (1996) 75-89.
  • J. Taborski, P. Väterlein, H. Dietz, U. Zimmermann und E. Umbach,
    "NEXAFS Investigations on Ordered Adsorbate Layers of  Large Aromatic Molecules",
    J. Electron Spectrosc. 75 (1995) 129-147.
  • E. Umbach, C. Seidel, J. Taborski, R. Li und A. Soukopp,
    "Highly Ordered Organic Adsorbates: Commensurate Superstructures, OMBE, and 1-D Nanostructures",
    Phys. Stat. Solidi (b) 192 (1995) 389-406.
  • J. Taborski, V. Wüstenhagen, P. Väterlein und E. Umbach,
    "Precoverage-Dependent Molecular Orientation of Big Aromatic Adsorbates: NDCA on Ni(111) and O/Ni(111)",
    Chem. Phys. Lett. 239 (1995) 380-386.
  • R. Li, P. Bäuerle und E. Umbach,
    "Vibrational and Geometric Structure of Quaterthiophene on Ag(111)",
    Surf. Sci. 331-333 (1995) 100-104.
  • M. Stoldt, P. Bäuerle, H. Schweizer, and E. Umbach,
    "Investigation of Transport Phenomena in Thin Oligothiophene Films in Metal/Organic/Metal Heterostructures",
    Mol. Cryst. Liqu. Cryst. 240 (1994) 127-134.
  • M. Jung, U. Baston, G. Schnitzler, M. Kaiser, J. Papst, T. Porwol, H.-J. Freund, and E. Umbach,
    "Electronic Structure of Adsorbed Aromatic Molecules: Perylene and PTCDA on Si(111) and Ag(111)",
    J. Mol. Structure 293 (1993) 239-244.
  • P. Bäuerle, G. Götz, M. Hiller, S. Scheib, T. Fischer, U. Segelbacher, M. Bennati, A. Grupp, M. Mehring, M. Stoldt, C. Seidel, F. Geiger, H. Schweizer, E. Umbach, M. Schmelzer, S. Roth, H.J. Egelhaff, and D. Oelkrug,
    "Design, Synthesis and Assembly of New Thiophene-Based Molecular Functional Units with Controlled Properties",
    Synth. Metals 61 (1993) 71-79
  • M. Stoldt, P. Bäuerle, H. Schweizer, and E. Umbach,
    "Investigation of Transport Phenomena in Metal/Organic/Metal Micro-Heterostructures",
    Synth. Metals 55-57 (1993) 4059-4064.
  • M. Stoldt, P. Bäuerle, H. Schweizer, and E. Umbach,
    "Charge Transport in Metal/Organic/Metal Microstructures",
    in: "Nanostructures Based on Molecular Materials", Eds.: W. Göpel and Ch. Ziegler, VCH Verlagsgesellschaft Weinheim (1992), p. 295-311.
  • D. Schmeißer, P. Bätz, W. Göpel, W. Jaegermann, Ch. Pettenkofer, H. Wachtel, A. Jimenez-Gonzales, J.U. von Schütz, H.C. Wolf, J. Taborski, V. Wüstenhagen, E. Umbach, P. Erk, H. Meixner und S. Hünig,
    "Semiconducting and Metallic States in Conducting Organic Low-dimensional Materials",
    Ber. Bunsenges. 95 (1991) 1441-1450.
  • K. Baumgärtner, M. Vollmer-Uebing, J. Taborski, P. Bäuerle und E. Umbach,
    "Adsorption and Polymerization of Thiophene on a Ag(111) Surface",
    Ber. Bunsenges. 95 (1991) 1488-1495.
  • D. Schmeißer, A. Jimenez-Gonzales, J. von Schütz, J. Taborski, V. Wüstenhagen, E. Umbach und W. Göpel,
    "Charge-Induced Delocalization in the p-System of DCNQI",
    Synth. Metals 42 (1991) 1809-1813.
  • E. Umbach,
    "Characterization of Organic Overlayers on Well-Defined Substrates",
    Progr. Surf. Sci. 35 (1991) 113-127.
  • U. Zimmermann, G. Schnitzler, M. Schneider, M. Kaiser, R. Herde, V. Wüstenhagen, J. Taborski, N. Karl, R. Dudde, E.-E. Koch und E. Umbach,
    "Monolayer Adsorption and Thin Film Growth of Big Aromatic Molecules on Si(111)",
    Vacuum 41, 7-9 (1990) 1795-1796.
  • U. Zimmermann, G. Schnitzler, N. Karl, E. Umbach, and R. Dudde,
    "Epitaxial Growth and Characterization of Organic Thin Films on Silicon",
    Thin Solid Films 175 (1989) 85-88.

 

 

 Optische Eigenschaften in organischen Dünnfilmen

 

 

2004

 

  • W. Gebauer, A. Langner, M. Schneider, M. Sokolowski, and E. Umbach,
    "Luminescence Quenching of Ordered p-Conjugated Molecules near a Metal Surface: quaterthiophene and PTCDA on Ag(111)",
    Phys. Rev. B 69 (2004) 155431
  • M. Schneider, E. Umbach, A. Langner, and M. Sokolowski,
    "Luminescence of Molecules on Surfaces of Wide Gap Materials",
    J. Luminescence 110 (2004) 275-283.

 

1998

 

  • E. Umbach, W. Gebauer, A. Soukopp, M. Bäßler und M. Sokolowski,
    "New Insight in the Optical Properties of Ultrathin Organic Films by Epitaxial Preparation",
    J. Luminesc. 76/77 (1998) 641-651.
  • H.-J. Egelhaaf, D. Oelkrug, W. Gebauer, M. Sokolowski, E. Umbach, T. Fischer und P. Bäuerle,
    "Photophysical Properties of ß-Alkylated Quater-, Octa-, Dodeca-, and Hexadecathiophenes",
    Optical Mat. 9 (1998) 59-64.
  • W. Gebauer, M. Sokolowski und E. Umbach,
    "Optical Processes in Ultrathin Oligothiopene Films on Well-defined Substrates",
    Chem. Phys. 227 (1998) 32-48.

 

1997



  • W. Gebauer, M. Bäßler, R. Fink, M. Sokolowski und E. Umbach,
    "New Insight into Optical Properties of Thin Organic Films by Epitaxial Preparation",
    Chem. Phys. Lett. 266 (1997) 177-183.
  • W. Gebauer, C. Väterlein, A. Soukopp, M. Sokolowski, H. Port, P. Bäuerle und E. Umbach,
    "Unusual Luminescence of Thin Vapour-Deposited Oligothiophene Films",
    Synth. Met. 87 (1997) 127-135.

 

1996



  • W. Gebauer, M. Bäßler, A. Soukopp, C. Väterlein, R. Fink, M. Sokolowski und E. Umbach,
    "High-resolution Luminescence of Epitaxial Organic Films: quaterthiophene on Ag(111)",
    Synth. Met. 83 (1996) 227-230.
  • W. Gebauer, C. Väterlein, A. Soukopp, M. Sokolowski und E. Umbach,
    "High-Resolution Optical Spectra from Ultrathin Quaterthiophene Films",
    Thin Solid Films 284/285 (1996) 576-580.

 

 

Organische Leuchtdioden; Transporteigenschaften in organischen Filmen

 

2000

 

  • J. Laubender, L. Chkoda, M. Sokolowski, and E. Umbach,
    "The Influence of Oxygen and Air on the Characteristics of Organic Light Emitting Devices Studied by In-vacuo Measurements",
    Synth. Metals 111 (2000) 373-376.

 

1997

 

  • C. Väterlein, H. Neureiter, W. Gebauer, B. Ziegler, M. Sokolowski, P. Bäuerle und E. Umbach,
    "Organic Light Emitting Devices Based on Vapour-Deposited Films of End-capped Sexithiophenes: Evidence for Schottky Barriers and Transport Limitations",
    J. Appl. Phys. 82 (1997) 3003-3013.

 

1996

 

  • P. Bäuerle, M. Hiller, S. Scheib, M. Sokolowski und E. Umbach,
    "Post-Polymerization Functionalization of Conducting Polymers: Novel Poly(alkylthiophene)s Substituted with Easily Replaceable Activated Ester Groups",
    Adv. Mater. 8 (1996) 214-218.
  • C. Väterlein, B. Ziegler, W. Gebauer, H. Neureiter, M. Stoldt, M.S. Weaver, P. Bäuerle, M. Sokolowski, D.D.C. Bradley und E. Umbach,
    "Electrical Conductivity and Oxygen Doping of Vapour-Deposited Oligothiophene Films",
    Synth. Metals 76 (1996) 133-136.

 

1994

 

  • H. Neureiter, W. Gebauer, C. Väterlein, M. Sokolowski, P. Bäuerle und E. Umbach,
    "Study of Charge Carrier Injection and Luminescence Processes in Oligothiophene-Based Light Emitting Diodes",
    Synth. Metals 67 (1994) 173-176.
  • M. Stoldt, P. Bäuerle, H. Schweizer und E. Umbach,
    "Investigation of Transport Phenomena in Thin Oligothiophene Films in Metal/Organic/Metal Heterostructures",
    Mol. Cryst. Liqu. Cryst. 240 (1994) 127-134.

 

1993



  • F. Geiger, M. Stoldt, P. Bäuerle, H. Schweizer, and E. Umbach,
    "Electroluminescence from Oligothiophene-Based Light Emitting Devices",
    Adv. Mat. 5 (1993) 922-925.

 

1992

 

  • M. Stoldt, P. Bäuerle, H. Schweizer und E. Umbach,
    "Charge Transport in Metal/Organic/Metal Microstructures",
    in: "Nanostructures Based on Molecular Materials",
    Hrsg.: W. Göpel und Ch. Ziegler, VCH Verlagsgesellschaft Weinheim (1992), S. 295-311.

 

 

Quantenchemische Rechnungen

 

1998

 

  • P. Väterlein, R. Fink, E. Umbach, and W. Wurth,
    "Analysis of the X-ray Absorption Spectra of Linear Saturated Hydrocarbons using the Xa Scattered-wave Method",
    J. Chem. Phys. 108 (1998) 3313-3320.
  • P. Väterlein, R. Fink, E. Umbach, and W. Wurth,
    "Simulation of Resonantly and Off-resonantly Excited X-.ray Emission Spectra - A Novel Application for the Xa-Scattered Wave Method",
    Phys. Rev.A 57 (1998) 4275-4278.

 

1996

 

  • P. Väterlein, H. Dietz, J. Taborski, W. Wurth und E. Umbach,
    "Interpretation of Complicated NEXAFS Spectra by Comparison with Xa-SW Calculations",
    J. Electron Spectrosc. 78 (1996) 351-354.
  • P. Väterlein, T. Krause, M. Bäßler, R. Fink, E. Umbach, J. Taborski, V. Wüstenhagen und W. Wurth,
    "Adsorption-Induced Bending of a Triatomic Molecule: NEXAFS Investigation of N2O Adsorbed on Different Ni(111) Surfaces",
    Phys. Rev. Lett. 76 (1996) 4749-4752.

 

1993

 

  • M. Jung, U. Baston, G. Schnitzler, M. Kaiser, J. Papst, T. Porwol, H.-J. Freund und E. Umbach,
    "Electronic Structure of Adsorbed Aromatic Molecules: Perylene and PTCDA on Si(111) and Ag(111)",
    J. Mol. Structure 293 (1993) 239-244.

 

 

 

Untersuchungen an polykristallinen Solarzellen

 2009

  • F. Erfurth, B. Hußmann, A. Schöll, F. Reinert, A. Grimm, I. Lauermann, M. Bär, Th. Niesen, J. Palm, S. Visbeck, L. Weinhardt, E. Umbach,
    "Chemical structure of the (Zn1-x,Mgx)O/CuIn(S,Se)2 interface in thin film solar cells",
    Appl. Phys. Lett. 95, 122104 (2009)

2007

 

  • L. Weinhardt, M. Blum, M. Bär, C. Heske, O. Fuchs, E. Umbach, J.D. Denlinger, K. Ramanathan, and R. Noufi,
    "Chemical properties of the Cu(In,Ga)Se2/Mo/glass interfaces in thin film solar cells",
    Thin Solid Films 515, 6119-6122 (2007).

 

2006

 

  • M. Bär, L. Weinhardt, C. Heske, H.-J. Muffler, E. Umbach, M.Ch. Lux-Steiner, Th. P. Niesen, F. Karg, and Ch.-H. Fischer,
    "Chemical insights into the Cd2+/NH3-treatment - an approach to explain the formation of Cd-compounds on Cu(In,Ga)(S,Se)2 absorbers",
    Solar Energy Materials and Solar Cells 90, 3151 (2006).
  • L. Weinhardt, O. Fuchs, D. Groß, E. Umbach, C. Heske, N.G. Dhere, A.A. Kadam, and S.S. Kulkarni
    "Surface modifications of Cu(In,Ga)S2 thin film solar cell absorbers by KCN and H2O2/H2SO4 treatments",
    J. Appl. Phys. 100, 024907 (2006).
  • L. Weinhardt, O. Fuchs, A. Peter, E. Umbach, C. Heske, J. Reichardt, M. Bär, I. Lauermann, I. Kötschau, A. Grimm, A. Sokoll, M.Ch. Lux-Steiner, Ch. Jung, W. Gudat, T. P. Niesen, and F. Karg,
    "Spectroscopic investigation of the deeply buried Cu(In,Ga)(S,Se)2/Mo interface in thin film solar cells",
    J. Chem. Phys. 124, 074705 (2006).

 

2005

 

  • N.G. Dhere, A.A. Kadam, A.H. Jahagirdar, S.S. Kulkarni, L. Weinhardt, D. Groß, C. Heske, and E. Umbach,
    "Spectroscopic analysis of CIGS2/CdS thin film solar cell heterojunctions on stainless steel foil",
    Journal of Physics and Chemistry of Solids 66, 1872-1875 (2005).
  • M. Bär, L. Weinhardt, C. Heske, H.-J. Muffler, M. Ch. Lux-Steiner, E. Umbach, and Ch.-H. Fischer,
    "Cd2+/NH3-treatment of Cu(In,Ga)(S,Se)2 thin film solar cell absorbers - a model for the performance-enhancing processes in the partial electrolyte",
    Prog. Photovolt. 13, 571-577 (2005).
  • M. Bär, J. Reichardt, A. Grimm, I. Kötschau, I. Lauermann, K. Rahne, S. Sokoll, M.C. Lux-Steiner, Ch.-H. Fischer, L. Weinhardt, E. Umbach, C. Heske, Ch. Jung, T.P. Niesen, and S. Visbeck,
    "The Zn(O,OH) material system in chalcopyrite thin film solar cells: Position of the valence band maximum vs. composition",
    J. Appl. Phys. 98, 053702 (2005).
  • M. Bär, S. Lehmann, M. Rusu, A. Grimm, I. Kötschau, I. Lauermann, P. Pistor, S. Sokoll, Th. Schedel-Niedrig, M.C. Lux-Steiner, Ch.-H. Fischer, L. Weinhardt, C. Heske, and Ch. Jung,
    "Cd2+/NH3 - Treatment Induced Formation of a CdSe Surface Layer on CuGaSe2 Thin Film Solar Cell Absorbers",
    Appl. Phys. Lett. 86, 222107 (2005).
  • J. Reichardt, M. Bär, A. Grimm, I. Kötschau, I. Lauermann, S. Sokoll, M. C. Lux-Steiner, Ch.-H. Fischer, C. Heske, L. Weinhardt, O. Fuchs, Ch. Jung, W. Gudat, and F. Karg,
    "Inducing and monitoring photoelectrochemical reactions at surfaces and buried interfaces in Cu(In,Ga)(S,Se)2 thin film solar cells",
    Appl. Phys. Lett. 86, 172102 (2005).
  • L. Weinhardt, O. Fuchs, D. Groß, G. Storch, E. Umbach, N.G. Dhere, A.A. Kadam, S.S. Kulkarni, and C. Heske,
    "Band alignment at the CdS/Cu(In,Ga)S2 interface in thin film solar cells",
    Appl. Phys. Lett. 86, 062108 (2005).

 

2004

 

  • M. Bär, H.-J. Muffler, M.C. Lux-Steiner, C.-H. Fischer, L. Weinhardt, O. Fuchs, C. Heske, E. Umbach, T.P. Niesen, and F. Karg,
    "Chemical Processes during Cd2+/NH3-Treatment of Cu(In,Ga)(S,Se)2 Absorbers",
    Proc. 14th Intl. Photovoltaic Sci. Eng. Conf. (PVSEC-14) Vol. II, Bangkok (2004) 703.
  • L. Weinhardt, C. Heske, E. Umbach, T.P. Niesen, S. Visbeck, and F. Karg,
    "Band alignment at the i-ZnO/CdS interface in Cu(In,Ga)(S,Se)2 thin film solar cells",
    Appl. Phys. Lett. 84, 3175-3177 (2004).

 

2003

 

  • I. Lauermann, M. Bär, A. Ennaoui, U. Fiedeler, C.-H. Fischer, A. Grimm, I. M. Kötschau, M. C. Lux-Steiner, J. Reichardt, B. R. Sankapal, S. Siebentritt, S. Sokoll, L. Weinhardt, O. Fuchs, C. Heske, C. Jung, W. Gudat, F. Karg, and T. P. Niesen,
    "Analysis of zinc compound buffer layers in Cu(In,Ga)(S,Se)2 thin film solar cells by synchrotron-based soft X-ray spectroscopy"
    Mat. Res. Soc. Symp. Proc. Vol. 763, ISBN 1-55899-700-8, p. 610-613 (2003).
  • A. Meeder, L. Weinhardt, R. Stresing, D. Fuertes Marrón, R. Würz, S.M. Babu, T. Schedel-Niedrig, M.Ch. Lux-Steiner, C. Heske, and E. Umbach,
    "Surface and bulk properties of CuGaSe2 thin films",
    J. of Phys. and Chem. of Solids 64, 1553-1557 (2003).
  • C. Heske, U. Groh, O. Fuchs, L. Weinhardt, E. Umbach, Th. Schedel-Niedrig, Ch.-H. Fischer, M.Ch. Lux-Steiner, S. Zweigart, F. Karg, J.D. Denlinger, B. Rude, C. Andrus, and F. Powell,
    "Monitoring chemical reactions on surfaces in liquids: water on CuIn(S,Se)2 thin film solar cell absorbers",
    J. Chem. Phys. (Comm.) 119, 10467-10470 (2003).
  • C. Heske, U. Groh, O. Fuchs, L. Weinhardt, E. Umbach, M. Grün, S. Petillon, A. Dinger, C. Klingshirn, W. Szuszkiewicz, and A. Fleszar,
    "Studying the local chemical environment of sulfur atoms at buried interfaces in CdS/ZnSe superlattices",
    Appl. Phys. Lett. 83, 2360-2362 (2003).
  • L. Weinhardt, M. Bär, H.-J. Muffler, Ch.-H. Fischer, M.C. Lux-Steiner, T.P. Niesen, F. Karg, Th. Gleim, C. Heske, and E. Umbach,
    "Impact of Cd2+-treatment on the band alignment at the ILGAR-ZnO/CuIn(S,Se)2 heterojunction",
    Thin Solid Films 431-432, 272-276 (2003).
  • L. Weinhardt, Th. Gleim, O. Fuchs, C. Heske, E. Umbach, M. Bär, H.-J. Muffler, Ch.-H. Fischer, M.C. Lux-Steiner, Y. Zubavichus, T.P. Niesen, and F. Karg,
    "CdS- and Cd(OH)2-formation during Cd-treatments of Cu(In,Ga)(S,Se)2 thin film solar cell absorbers",
    Appl. Phys. Lett. 82, 571-573 (2003).

 

2002

 

  • L. Weinhardt, M. Morkel, T. Gleim, C. Heske, E. Umbach, S. Zweigart, T.P. Niesen, and F. Karg,
    "Band Alignment at the CdS/CuIn(S,Se)2 Heterojunction in Thin Film Solar Cells",
    Proc. 17th EPSEC Munich (2002) p. 1261.
  • C. Heske, U. Groh, L. Weinhardt, O. Fuchs, B. Holder, E. Umbach, C. Bostedt, L.J. Terminello, S. Zweigart, T.P. Niesen, and F. Karg,
    "Damp-heat induced sulfate formation in Cu(In,Ga)(S,Se)2-based thin film solar cells",
    Appl. Phys. Lett. 81, 4550-4552 (2002).
  • Th. Gleim, L. Weinhardt, Th. Schmidt, R. Fink, C. Heske, E. Umbach, P. Grabs, G. Schmidt, L.W. Molenkamp, B. Richter, A. Fleszar, and H.-P. Steinrück,
    "Energy level alignment at zincblende Cd(Mn)Se/ZnTe/InAs(100) interfaces",
    Appl. Phys. Lett. 81, 3813-3815 (2002).

 

2001

 

  • C. Heske, U. Groh, O. Fuchs, E. Umbach, N. Franco, C. Bostedt, L.J. Terminello, R.C.C. Perera, K.H. Hallmeier, A. Preobrajenski, R. Szargan, S. Zweigart, W. Riedl, and F. Karg,
    "X-ray Emission Spectroscopyof Cu(In,Ga)(S,Se)2-Based Thin Film Solar Cells: Electronic Structure, Surface Oxidation, and Buried Interfaces",
    phys. stat. sol.(a) 187 (2001) 13-24.
  • M. Morkel, L. Weinhardt, B. Lohmüller, C. Heske, E. Umbach, W. Riedl, S. Zweigart, and  F. Karg,
    "Flat conduction band alignment at the CdS/CuInSe2 thin film solar cell heterojunction",
    Appl. Phys. Lett. 79 , 4482-4484 (2001).

 

2000

 

  • D. Eich, U. Herber, U. Groh, U. Stahl, M. Marsi, M. Kiskinova, W. Riedl, R. Fink, and E. Umbach,
    "Lateral Inhomogeneities of Cu(In,Ga)Se2 Absorber Films",
    Thin Solid Films 361-362 (2000) 258-262.
  • C. Heske, D. Eich, U. Groh, R. Fink, E. Umbach, T. Van Buuren, C. Bostedt, N. Franco, L.J. Terminello, M.M. Grush, T.A. Callcott, F.J. Himpsel, D.L. Ederer, R.C.C. Perera, W. Riedl, and F. Karg,
    "Self-limitation of Na Content at the CdS/Cu(In,Ga)Se2 Solar Cell Heterojunction",
    Thin Solid Films 361-362 (2000) 360-363.
  • C. Heske, D. Eich, R. Fink, E. Umbach, T. Van Buuren, C. Bostedt, S. Kakar, L.J. Terminello, M.M. Grush, T.A. Callcott, F.J. Himpsel, D.L. Ederer, R.C.C. Perera, W. Riedl, and F. Karg,
    "Semiquantitative and Non-destructive Analysis of Impurities at a Buried Interface: Na and the CdS/Cu(In,Ga)Se2 Heterojunction",
    Surf. Interf. Analysis 30 (2000) 459-463.

 

1999

 

 

  • C. Heske, D. Eich, R. Fink, E. Umbach, T. van Buuren, C. Bostedt, L.J. Terminello, S. Kakar, M.M. Grush, T.A. Callcott, F.J. Himpsel, D.L. Ederer, R.C.C. Perera, W. Riedl, and F. Karg,
    "Observation of Intermixing at the Buried CdS/Cu(In,Ga)Se2 Thin Film Solar Cell Heterojunction",
    Appl. Phys. Lett. 74 (1999) 1451-1453.
  • C. Heske, D. Eich, R. Fink, E. Umbach, S. Kakar, M.M. Grush, T.A. Callcott, T. van Buuren, C. Bostedt, L.J. Terminello, F.J. Himpsel, D.L. Ederer, R.C.C. Perera, W. Riedl, and F. Karg,
    "Localisation of Na Impurities at a Buried CdS/Cu(In,Ga)Se2 Heterointerface",
    Appl. Phys. Lett. 75 (1999) 2082-2084.

 

1997

 

  • C. Heske, G. Richter, Z. Chen, R. Fink und E. Umbach,
    "Influence of Na and H2O on the Surface Properties of Cu(In,Ga)Se2 Thin Films",
    J. Appl. Phys. (1997) 2411-2420.

 

1996

 

  • C. Heske, G. Richter, Z. Chen, R. Fink, E. Umbach, W. Riedl und F. Karg,
    "Influence of Humidity on Polycrystalline Cu(In,Ga)Se2 Thin Films for Solar Cells: A Study of Na and H2O Coadsorption",
    25th PVSC, IEEE (1996) 861-864.
  • C. Heske, R. Fink, W. Riedl, F. Karg und E. Umbach,
    "Na-Induced Effects on the Electronic Structure and Composition of Cu(InGa)Se2 Thin Film Surfaces",
    Appl. Phys. Lett. 68 (1996) 3431-3433.
  • C. Heske, R. Fink, E. Umbach, W. Riedl und F. Karg,
    "Surface Preparation Effects of Polycrystalline Cu(InGa)Se2 Thin Films Studied by XPS and UPS",
    Cryst. Res. Technol. 31 (1996) 919-922.
  • C. Heske, R. Fink, E. Umbach, W. Riedl und F. Karg,
    "Electronic and Compositional Effects of Na Deposition on Cu(InGa)Se2 Thin Film Surfaces",
    Cryst. Res. Technol. 31 (1996) 465-468.

 

1995

 

  • C. Heske, R. Fink, D. Jacob und E. Umbach,
    "Electronic Structure, Composition, and Local Surface Photovoltage Effects of Polycrystalline Cu(InGa)Se2 Thin Films after Na Deposition",
    Proc. 13th EPSEC, Nizza (1995) 2003-2006.

 

 

Untersuchungen an Halbleiteroberflächen und Halbleiterschichtsystemen



2007

 

  • J. Wenisch, C. Gould, L. Ebel, J. Storz, K. Pappert, M.J. Schmidt, C. Kumpf, G. Schmidt, K. Brunner, and L.W. Molenkamp,
    "Control of magnetic anisotropy in (Ga,Mn)As by lithography-induced strain relaxation"'
    Phys. Rev. Lett. 99, 077201 (2007).
  • C. Kumpf, A. Stahl, I. Gierz, C. Schumacher, S. Mahapatra, F. Lochner, K. Brunner, G. Schmidt, L.W. Molenkamp, and E. Umbach,
    "Structure and relaxation effects in thin semiconducting films and quantum dots"
    phys. stat. sol. (c) 4(9), 3150-3160 (2007).
  • C. Kumpf, W. Weigand, A. Müller, J. Wagner, V. Wagner, P. Bach, G. Schmidt, L.W. Molenkamp, J. Geurts, and E. Umbach,
    "Surface reconstructions of II-VI compound semiconductor surfaces"'
    phys. stat. sol. (c) 4(9), 3183-3190 (2007).
  • A. Fleszar, W. Hanke, W. Weigand, C. Kumpf, C. Heske, E. Umbach, L. Plucinski, and R.L. Johnson,
    "Angle-resolved photoemission on ZnSe(001): determination of conduction band quasiparticle shifts"'
    phys. stat. sol. (c) 4(9), 3204-3209 (2007).

 

2005

 

  • A. Koveshnikov, G. Woltersdorf, J.Q. Liu, B. Kardasz, O. Mosendz, B. Heinrich, K.L. Kavanagh, P. Bach, A.S. Bader, C. Schumacher, C. Rüster, C. Gould, G. Schmidt, L.W. Molenkamp, and C. Kumpf,
    "Structural and magnetic properties of NiMnSb/InGaAs/InP(001)"'
    J. Appl. Phys. 97, 073906 (2005).
  • L. Plucinski, W. Weigand, C. Kumpf, C. Heske, R. Kosuch, T. Schallenberg, L.W. Molenkamp, E. Umbach, and R.L. Johnson,
    "Two-fold Symmetry in the Surface Electronic Structure of ZnSe(001)-c(2x2): Theory and Experiment",
    Surf. Sci. 585 (2005) 85-100.

 

2004

 

  • L. Plucinski, R. Kosuch, W. Weigand, C. Kumpf, C. Heske, A. Fleszar, T. Schallenberg, W. Faschinger, L. Molenkamp, E. Umbach, and R.L. Johnson,
    "Asymmetry in the Surface Electronic Structure of ZnSe(001)-c(2x2) Surfaces",
    Proc. ICPS26 (Edinburgh) (2004).
  • W. Weigand, C. Kumpf, M. Sokolowski, F. Reusch, L. Hansen, A. Waag, L.W. Molenkamp, and E. Umbach,
    "Structure of the Te/Ge(001)-c(2x2) Surface Studied by SPALEED",
    Surf. Sci. 562 (2004) 33-42.
  • L. Plucinski, R.L. Johnson, A. Fleszar, W. Hanke, W. Weigand, C. Kumpf, C. Heske, E. Umbach, T. Schallenberg, and L. Molenkamp,
    "Valence Band Electronic Structure of ZnSe(001): Theory and Experiment",
    Phys. Rev. B 70 (2004) 125308.

 

2003

 

  • P. Bach, C. Rüster, C. Gould, C.R. Becker, G. Schmidt, L.W. Molenkamp, W. Weigand, C. Kumpf, E. Umbach, R. Urban, G. Woltersdorf, and B. Heinrich,
    "Molecular Beam Epitaxy of the Half-Heusler Alloy NiMnSb on (In,Ga)As/InP(001)",
    Appl. Phys. Lett. 83 (2003) 521-523.
  • T. Gleim, C. Heske, E. Umbach, C. Schumacher, S. Gundel, W. Faschinger, A. Fleszar, C. Ammon, M. Probst, and H.-P. Steinrück,
    "Formation of the ZnSe(/Te)/GaAs(100)-Heterojunction ",
    Surf. Sci. 531 (2003) 77-85.
  • W. Weigand, A. Müller, L. Kilian, T. Schallenberg, P. Bach, G. Schmidt, L. Molenkamp, O. Bunk, R. Johnson, C. Kumpf, and E. Umbach,
    "Structural Investigation of the ZnSe(001)-c(2x2) Surface",
    Phys. Rev. 68 (2003) 241314.
  • C. Kumpf, A. Müller, W. Weigand, E. Umbach, J. Wagner, V. Wagner, S. Gundel, L. Hansen, J. Geurts, O. Bunk, J.H. Zeysing, F. Wu, and R. Johnson,
    "Analysis of Structure and Vibrational Dynamics of the BeTe(001) Surface Using X-ray Diffraction, Raman Spectroscopy, and Density Functional Theory",
    Phys. Rev. B 68 (2003) 035339.
  • A. Meeder, L. Weinhardt, R. Stresing, D. Fuertes Marrón, R. Würz, S.M. Babu, T. Schedel-Niedrig, M.Ch. Lux-Steiner, C. Heske, and E. Umbach,
    "Surface and bulk properties of CuGaSe2 thin films",
    J. of Phys. and Chem. of Solids 64, 1553-1557 (2003).
  • C. Heske, U. Groh, O. Fuchs, L. Weinhardt, E. Umbach, M. Grün, S. Petillon, A. Dinger, C. Klingshirn, W. Szuszkiewicz, and A. Fleszar,
    "Studying the local chemical environment of sulfur atoms at buried interfaces in CdS/ZnSe superlattices",
    Appl. Phys. Lett. 83, 2360-2362 (2003).
  • Th. Gleim, L. Weinhardt, Th. Schmidt, R. Fink, C. Heske, E. Umbach, L. Hansen, G. Landwehr, A. Waag, A. Fleszar, B. Richter, Ch. Ammon, M. Probst, and H.-P. Steinrück,
    "The influence of As-passivation on the electronic level alignment at BeTe/Si(111)-interfaces",
    Phys. Rev. B 67, 205315 (2003)
  • B. Schreder, C. Dem, M. Schmitt, A. Materny, W. Kiefer, U. Winkler, and E. Umbach,
    "Raman Spectroscopy of II-VI Semiconductor Nanostructures: CdS Quantum Dots",
    J. Raman Spectrosc. 34 (2003) 100-103.
  • Z. Chen, D. Eich, U. Winkler, R. Fink, E. Umbach, W. Spahn, and W. Faschinger,
    "Core-hole Screening Effects at a Metal/semiconductor Interface: Au/ZnSe(001)",
    Surf. Sci. (2003), .

 

2002

 

  • Z.H. Chen, M. Sokolowski, F. Stadler, M. Schneider, R. Fink, and E. Umbach,
    "Influence of Step-induced Antiphase Boundaries on the Surface Morphology of Zincblende-type Semiconductors",
    Europhys. Lett. 59 (2002) 552-558.
  • W. Weigand, C. Kumpf, M. Sokolowski, A. Bader, C. Schumacher, A. Möginger, W. Faschinger, L.W. Molenkamp, and E. Umbach,
    "Discrete Mosaic ‚Spread' at the Surface of ZnSe Layers on GaAs(001)",
    Phys. stat. sol. (b) 229 (2002) 117-121.
  • P. Grabs, G. Richter, R. Fiederling, C.R. Becker, G. Schmidt, L. Molenkamp, W. Weigand, E. Umbach, I.V. Sedova, and S.V. Ivanov,
    "Molecular Beam Epitaxy of (Cd,Mn)Se on InAs, a Promising Material System for Spintronics",
    Appl. Phys. Lett. 80 (2002) 3766-3768.
  • Th. Gleim, L. Weinhardt, Th. Schmidt, R. Fink, C. Heske, E. Umbach, P. Grabs, G. Schmidt, L.W. Molenkamp, B. Richter, A. Fleszar, and H.-P. Steinrück,
    "Energy level alignment at zincblende Cd(Mn)Se/ZnTe/InAs(100) interfaces",
    Appl. Phys. Lett. 81, 3813-3815 (2002).
  • L. Plucinski, R. Kosuch, W. Weigand, C. Kumpf, C. Heske, A. Fleszar, T. Schallenberg, W. Faschinger, L.W. Molenkamp, E. Umbach, R.L. Johnson,
    "Asymmetry in the surface electronic structure of ZnSe(001)-c(2x2) surfaces"'
    Proc. ICPS-26 (Edinburgh), 2002, p. 29.

 

2001

 

  • C. Kumpf, D. Smilgies, E. Landemark, M. Nielsen, R. Feidenhans'l, O. Bunk, J. H. Zeysing, Y. Su, R. L. Johnson, L. Cao, J. Zegenhagen, B. O. Fimland, L. D. Marks, D. Ellis,
    "Structure of metal-rich surfaces of III-V compound semiconductors"
    Phys. Rev. B 64, 075307 (2001).
  • C. Kumpf, L. D. Marks, D. Ellis, D. Smilgies, E. Landemark, M. Nielsen, R. Feidenhans'l, J. Zegenhagen, O. Bunk, J. H. Zeysing, Y. Su, R. L. Johnson,
    "Subsurface Dimerization in III-V Semiconductor (001)-Surfaces"
    Phys. Rev. Lett. 86, 3586 (2001).
  • T. Gleim, C. Heske, E. Umbach, C. Schumacher, W. Faschinger, C. Ammon, M. Probst, and H.-P. Steinrück,
    "Reduktion of the ZnSe/GaAs(100) Valence Band Offset by a Te Interlayer",
    Appl. Phys. Lett. 78 (2001) 1867-1869.
  • E. Dynowska, B. Witkowska, W. Szuszkiewicz, C. Heske, U. Groh, O. Fuchs, D. Eich, R. Fink, and E. Umbach,
    "X-ray Emission Spectroscopy and X-ray Diffraction Analysis of HgS-based Mixed Crystals",
    IPAP Conf. Ser. 2 (2001) 119-121.

 

2000

 

  • B. Schreder, T. Schmidt, V. Ptatschek, U. Winkler, A. Materny, E. Umbach, M. Lerch, G. Müller, W. Kiefer, and L. Spanhel,
    "CdTe/CdS-"Core/Shell"-Clusters in Colloids and Films: The Path of Evolution and Thermal Break Up",
    J. Phys. Chem. B 104 (2000) 1677-1685.
  • D. Eich, D. Hübner, R. Fink, E. Umbach, K. Ortner, C.R. Becker, G. Landwehr, and A. Fleczar,
    "Electronic Structure of HgSe(001) Investigated by Direct and Inverse Photoemission",
    Phys. Rev. B 61 (2000) 12666.
  • D. Eich, D. Hübner, K. Ortner, L. Kilian, C.R. Becker, G. Landwehr, R. Fink, and E. Umbach,
    "Photoemission Investigation of MBE-grown HgSe/CdSe Heterostructures",
    Appl. Surf. Sci. 166 (2000) 12-16.

 

1999

 

 

  • H. Neureiter, S. Schinzer, M. Sokolowski, and E. Umbach,
    "Smoothing Kinetics of CdTe(001)-Surfaces: Indication for a Step/Terrace Exchange Barrier",
    J. Cryst. Growth 201/202 (1999) 93-96.
  • D. Eich, K. Ortner, U. Groh, Z.H. Chen, C.R. Becker, G. Landwehr, R. Fink, and E. Umbach,
    "Band Discontinuity and Band Gap of MBE Grown HgTe/CdTe(001) Heterointerfaces Studied by k-resolved Photoemission and Inverse Photoemission",
    Phys. Stat. Sol. 173 (1999) 261-267.

 

 

  • Z. Chen, D. Eich, G. Reuscher, A. Waag, R. Fink, and E. Umbach,
    "Photoemission Study of the Na/ZnSe(100) Interface",
    Phys. Rev. B 60 (1999) 8915-8923.

 

1998

 

  • S. Oehling, M. Ehinger, T. Gerhard, C.R. Becker, G. Landwehr, M. Schneider, D. Eich, H. Neureiter, R. Fink, M. Sokolowski, and E. Umbach,
    "Termination, Surface Structure, and Morphology of the Molecular-Beam-Epitaxially Grown HgTe(001) Surface",
    Appl. Phys. Lett. 73 (1998) 3205-3207.
  • H. Neureiter, M. Schneider, S. Tatarenko, M. Sokolowski und E. Umbach,
    " New Information from the Sublimating CdTe(001) Surface from High Resolution LEED",
    Appl. Surf. Sci. 123/124 (1998) 71-75.

 

1997

 

  • H. Neureiter, M. Sokolowski und E. Umbach,
    "Reconstruction, Morphology, and Stochiometry of CdTe(001) and Cd0.96Zn0.04Te(001) Surfaces",
    Surf. Sci. 388 (1997) 186-200.
  • C. Heske, U. Winkler, R. Fink, E. Umbach, C. Jung, P.R. Bressler und C. Hellwig,
    "Formation of the Zn/CdTe(100) Interface: Interdiffusion, Segregation, and Atomic Cd-Zn Exchange as Viewed by X-ray Photoemission",
    Phys. Rev. B 56 (1997) 13335-13345.
  • C. Heske, G. Richter, Z. Chen, R. Fink und E. Umbach,
    "Influence of Na and H2O on the Surface Properties of Cu(In,Ga)Se2 Thin Films",
    J. Appl. Phys. (1997) 2411-2420.
  • C. Heske, U. Winkler, R. Fink, E. Umbach, C. Jung und P.R. Bressler,
    "Segregation and Interdiffusion Effects during the Formation of the Mn/Cd(Zn)Te(100) Interface",
    Phys. Rev. B 56 (1997) 2085-2093.
  • C. Heske, U. Winkler, G. Held, R. Fink, E. Umbach, C. Jung, P.R. Bressler und C. Hellwig,
    "Surface Core Level Shifts of the Polar Semiconductor Cd(Zn)Te(100)",
    Phys. Rev. B 56 (1997) 2070-2078.
  • C. Heske, U. Winkler, H. Neureiter, M. Sokolowski, R. Fink, E. Umbach, C. Jung und P.R. Bressler,
    "Preparation and Termination of Well-defined CdTe(100) and CdZnTe(100) Surfaces",
    Appl. Phys. Lett. 70 (1997) 1022-1024.

 

1996

 

  • C. Heske, U. Winkler, R. Fink, E. Umbach, C. Jung, P.R. Bressler und C. Hellwig,
    "Surface Termination and Ag Segregation at CdTe(100) Surfaces Studied by Photoemission Surface Core Level Shifts",
    in: "The Physics of Semiconductors", Vol. III, (Hrsg.: M. Scheffler und R. Zimmermann), World Scientific (Singapore 1996), S.823-828.
  • C. Heske, G. Richter, Z. Chen, R. Fink, E. Umbach, W. Riedl und F. Karg,
    "Influence of Humidity on Polycrystalline Cu(In,Ga)Se2 Thin Films for Solar Cells: A Study of Na and H2O Coadsorption",
    25th PVSC, IEEE (1996) 861-864.
  • C. Heske, R. Fink, W. Riedl, F. Karg und E. Umbach,
    "Na-Induced Effects on the Electronic Structure and Composition of Cu(InGa)Se2 Thin Film Surfaces",
    Appl. Phys. Lett. 68 (1996) 3431-3433.
  • C. Heske, R. Fink, E. Umbach, W. Riedl und F. Karg,
    "Electronic and Compositional Effects of Na Deposition on Cu(InGa)Se2 Thin Film Surfaces",
    Cryst. Res. Technol. 31 (1996) 465-468.

 

1995

 

 

  • C. Heske, R. Fink, D. Jacob und E. Umbach,
    "Electronic Structure, Composition, and Local Surface Photovoltage Effects of Polycrystalline Cu(InGa)Se2 Thin Films after Na Deposition",
    Proc. 13th EPSEC, Nizza (1995) 2003-2006.

 

1994-1987

 

  • U. Höfer, P. Morgen, W. Wurth und E. Umbach,
    "Initial Stages of Oxygen Adsorption on Si(111): II. The Molecular Precursor",
    Phys. Rev. B 40 (1989) 1130-1144.
  • P. Morgen, W. Wurth, U. Höfer und E. Umbach,
    "Initial Stages of Oxygen Adsorption on Si(111): I. The Stable State",
    Phys. Rev. B 39 (1989) 3720-3734.
  • P.V. Nagarkar, S.K. Kulkarni, and E. Umbach,
    "Surface Oxidation Investigation on Ni36Fe32Cr14P12B6 Glass Using Angle-Resolved XPS",
    Appl. Surf. Sci. 29 (1987) 194-222.

 

Untersuchungen von anorganischen Adsorbatsystemen

 

 

2009
  • H. Bentmann, F. Forster, G. Bihlmayer, E. V. Chulkov, L. Moreschini, M. Grioni, F. Reinert
    "Origin and manipulation of the Rashba splitting in surface alloys"
    Europhysics Letters, 87, 37003 (2009)

 

2008

 

  • A. Nuber, M. Higashiguchi, F. Forster, P. Blaha, K. Shimada, and F. Reinert
    "Influence of reconstruction on the surface state of Au(110)",
    Phys. Rev. B, 78, (2008) 195412.
  • F. Forster, A. Bendounan, J. Ziroff, and F. Reinert,
    "Importance of surface states on the adsorption properties of noble metal surfaces",
    Phys. Rev. B, 78, (2008) 161408.
  • S. Hüfner, F. Reinert, S. Schmidt S, G. Nicolay und F. Forster,
    "Photoemission investigation of the L-gap surface states on clean and rare gas-covered noble metal (111)-surfaces",
    Z. Phys. Chem. 222 (2008) 407-431.

 

2007

 

  • L. Huang,  X. G. Gong, E. Gergert, F. Forster, A. Bendounan, F. Reinert und Z. Zhang,
    "Evolution of a symmetry gap and synergetic quantum well states in ultrathin Ag films on Au(111) substrates",
    Europhys. Lett. 78 (2007)57003.
  • F. Forster, A. Bendounan, F. Reinert,  V. G. Grigoryan und M. Springborg,
    "The Shockley-type surface state on Ar covered Au(111): High resolution photoemission results and the description by slab-layer DFT calculations",
    Surf. Sci. 601 (2007) 5595-5604.

 

2006

 

  • A. Bendounan, F. Forster, F. Reinert, B. Kierren, Y. Fagot-Revurat und D. Malterre,
    "Comment on 'Fermi Gap Stabilization of an Incommensurate Two-Dimensional Superstructure'",
    Phys. Rev. Lett. 96 (2006) 029701.
  • C. Hückstädt, S. Schmidt, S. Hüfner, F. Forster, F. Reinert und M. Springborg,
    "Work function studies of rare-gas/noble metal adsorption systems using a Kelvin probe",
    Phys. Rev. B 73 (2006) 075409.
  • F. Forster, A. Bendounan, J. Ziroff, and F. Reinert,
    "Systematic studies on surface modifications by arups on shockley-type surface states."
    Surface Science, 600(18):3870-3874, 2006.
  • A. Bendounan, F. Forster, J. Ziroff, F. Schmitt, and F. Reinert,
    "Quantitative analysis of the surface reconstruction induced band-gap in the shockley state on monolayer systems on noble metals."'
    Surface Science, 600(18):3865-3869, 2006.

 

2005

 

  • A. Bendounan, F. Forster, J. Ziroff, F. Schmitt, and F. Reinert,
    "Influence of the reconstruction in Ag/Cu(111) on the surface electronic structure: Quantitative analysis of the induced band gap."
    Physical Review B - Condensed Matter and Materials Physics, 72(7):075407, 2005.

 

2004

 

  • Y. Zubavichus, Y. Yang, M. Zharnikov, M. Grunze, O. Fuchs, T. Schmidt, C. Heske, E. Umbach, G. Tzvetkov, and F. Netzer,
    "Local structure of amorphous ice as revealed by O K-edge EXAFS",
    Chem. Phys. Chem. 5 (2004) 509-514.
  • F. Forster, S. Hüfner und F. Reinert,
    "Rare Gases on Noble-Metal Surfaces: An Angle-Resolved Photoemission Study with High Energy Resolution", J. Phys.
    Chem. B 108 (2004) 14692-14698.

 

2003

 

  • F. Forster, G. Nicolay, F. Reinert, D. Ehm, S. Schmidt und S. Hüfner, 
    "Surface and interface states on adsorbate covered noble metal surfaces",
    Surf. Sci. 532 (2003) 160-165.
  • G. Nicolay, F. Reinert, F. Forster, D. Ehm, S. Schmidt, B. Eltner und S.
    Hüfner, "About the stability of noble-metal surfaces during VUV-photoemission
    experiments", Surf. Sci. 543 (2003) 47-56.
  • G. Tzvetkov, Y. Zubavichus, G. Koller, Th. Schmidt, C. Heske, E. Umbach, M. Grunze, M. G. Ramsey, and F. P. Netzer,
    "Growth of H2O layers on an ultra-thin Al2O3 film: from monomeric species to ice",
    Surf. Sci. 543 (2003) 131-140.

 

1998

 

  • R. Reissner, U. Radke, M. Schulze und E. Umbach,
    "Water Coadsorbed with Oxygen and Potassium on Thin NiO(100) Films",
    Surf. Sci. (1998), im Druck.

 

1996

 

  • U. Malaske, H. Pfnür, M. Bäßler, M. Weiß und E. Umbach,
    "The Adsorption Geometry of OH Adsorbed at F-Centers on a NaCl(100) Surface",
    Phys. Rev. B53 (1996) 13115-13120.

 

1993

 

  • A. Klekamp, R. Reißner und E. Umbach,
    "Kinetic and Electronic Properties of Physisorbates on Epitaxial NaCl(100)-Layers: SF6, Xe and CO2",
    in: "Adsorption on Ordered Surfaces of Ionic Solids and Thin Films", H.-J. Freund and E. Umbach (Hrsg.),
    Springer Series in Surface Science, Vol. 33, Springer, Heidelberg 1993, S. 35-45.
  • P. Maciejewski, U. Höfer, W. Wurth, and E. Umbach,
    "Determination of Adsorbate Orientation by means of Angle-Resolved Auger Fine Structure: CO on Ni(110)",
    J. Electron Spectr. 62 (1993) 1-22.
  • A. Klekamp, and E. Umbach,
    "Substrate-Dependent UV-Induced Dissociation of Physisorbed SF6 in the Monolayer Regime",
    J. Phys.: Condens. Matter 5 (1993)
  • A. Klekamp und E. Umbach,
    "Physisorption on an epitaxial NaCl(100) double layer: SF6 and Xe",
    Surf. Sci. 284 (1993) 291-304.

 

1992

 

  • A. Klekamp and E. Umbach,
    "Energy Dependence of UPS Peak Intensities of Physisorbed SF6 Layers: Influence of the IMFP",
    Surf. Interface Anal. 18 (1992) 439-442.
  • A. Klekamp und E. Umbach,
    "Sodium-Induced Fragmentation of SF6 on Ni(111)",
    Surf. Sci. 271 (1992) 555-566.

 

1991

 

  • W. Weiss, and E. Umbach,
    "Intensity Anomalies in Adsorbate Photoemission Spectra for Varying Surface Composition: Xe/Ni(111) and Xe/Na/Ni(111)",
    Surf. Sci. 249 (1991) L333-L337.
  • A. Klekamp und E. Umbach,
    "Characterization of Mono-, Bi-, and Multilayers of SF6 on Ni(111) and O/Ni(111)",
    Surf. Sci. 249 (1991) 75-91.

 

1990-1976

 

  • C. Schneider, H.-P. Steinrück, T. Pache, P.A. Heimann, D.J. Coulman, E. Umbach, and D. Menzel,
    "A Comparative Study of the Electronic Structure of CO, CO+K, NO, NO+K on Ni(111) by ARUPS Using Synchrotron Radiation",
    Vacuum 41, 1-3 (1990) 730-731.
  • W. Wurth, D.J. Coulman, A. Puschmann, D. Menzel, and E. Umbach,
    "Relation between X-ray Photoemission Binding Energies and Absorption Resonance Energies for CO Adsorbates",
    Phys. Rev. B 41 (1990) 12933-12936.
  • U. Höfer, M.J. Breitschafter, and E. Umbach,
    "Photoemission Lineshapes of Adsorbates: Conclusions from the Analysis of Vibration-Resolved N2 Spectra",
    Phys. Rev. Lett. 64 (1990) 3050-3053.
  • A. Klekamp, and E. Umbach,
    "Photon-Induced Dissociation of Physisorbed SF6 on Ni(111)",
    Chem. Phys. Lett. 171 (1990) 233-238.
  • U. Höfer, M. Breitschafter, and E. Umbach,
    "Information from Vibration-Resolved UV-Photoemission Spectra of Physisorbates",
    Vacuum 41, 1-3 (1990) 431-432.
  • A. Klekamp, G. Brosig, and E. Umbach,
    "Adsorption, Screening Dynamics, and Stimulated Dissociation of SF6 on Ni(111)",
    Vacuum 41, 1-3 (1990) 728-729.
  • U. Höfer, and E. Umbach,
    "Vibrational Excitation in UV-Photoemission of Adsorbates",
    J. Electron Spectr. 54/55 (1990) 591-600.
  • E. Umbach, G. Brosig, J.J. Weimer und W. Wurth,
    "Influence of Alkali Atoms on Coadsorbed Molecules",
    in: "Physics and Chemistry of Alkali Metal Adsorption.", Hrsg.: H. Bonzel, A. Bradshaw und G. Ertl, Elsevier 1989, S. 241-252.
  • M. Pedio, J.C. Fuggle, J. Somers, E. Umbach, J. Haase, Th. Lindner, U. Höfer, M. Grioni, F. de Groot, B. Hillert, L. Becker, and A. Robinson,
    "Covalency in Oxygen Chemisorption as Probed by X-ray Absorption",
    Phys. Rev. B 40 (1989) 7924-7927.
  • W. Huschka, D. Ross, M. Maier, and E. Umbach,
    "Elektronenspektroskopische Dickenbestimmung isolierender Deckschichten auf Silizium",
    Vakuumtechnik 38 (1989) 184-194.
  • U. Höfer, A. Puschmann, D. Coulman, and E. Umbach,
    "Adsorption of Molecular Oxygen on Si(111)",
    Surf. Sci. 211/212 (1989) 948-958.
  • P. Morgen, W. Wurth, U. Höfer, and E. Umbach,
    "Initial Stages of Oxygen Adsorption on Si(111): I. The Stable State",
    Phys. Rev. B 39 (1989) 3720-3734.
  • U. Höfer, P. Morgen, W. Wurth, and E. Umbach,
    "Initial Stages of Oxygen Adsorption on Si(111): II. The Molecular Precursor",
    Phys. Rev. B 40 (1989) 1130-1144.
  • H.-P. Steinrück, C. Schneider, P.A. Heimann, T. Pache, E. Umbach, and D. Menzel,
    "Electronic Structure and Orientation of NO on Ni(111) Studied by ARUPS Using Synchrotron Radiation",
    Surf. Sci. 208 (1989) 136-154.
  • D. Menzel, P. Feulner, R. Treichler, E. Umbach, and W. Wurth,
    "Photoionization at Surfaces: Connections between Photoemission, Hole Decay, and Photodesorption from Adsorbate Layers",
    Physica Scripta T17 (1987) 166-170.
  • Shi-Kong Shen, P. Feulner, E. Umbach, W. Wurth, and D. Menzel,
    "Adsorption and Reaction of NO on Ni(111)",
    Z. Naturforschung 42a (1987) 1333-1345
  • M.J. Breitschafter, E. Umbach, and D. Menzel,
    "Characterization of Mixed N2-Layers on Ni(111) in the Temperature Range 20-100 K",
    Surf. Sci. 178 (1986) 725-734.
  • E. Umbach,
    "Angular Dependence and Final State Effects in the Auger Spectra of Adsorbed Molecules",
    Comm. Atomic Molec. Phys. 18 (1986) 23-38.
  • J.J. Weimer, W. Wurth, E. Hudeczek, and E. Umbach,
    "Rehybridization of CO under the Influence of Coadsorbed K on Ru(001)",
    J. Vac. Sci. Technol. A4 (1986) 1347-1350.
  • E. Umbach,
    "The Influence of Alkali Promoters on Coadsorbed Molecules",
    Div. Petrol. Chem. 31 (1986) 291-294.
  • W. Wurth, C. Schneider, E. Umbach, and D. Menzel,
    "Influence of Coadsorbed K on Near-Edge Resonances for Core and Valence Photoionization of CO on Ni(111)",
    Phys. Rev. B 34 (1986) 1336-1339.
  • J.J. Barton, C.C. Bahr, S.W. Robey, Z. Hussain, E. Umbach, and D.A. Shirley,
    "Adsorbate Geometry Determination by Measurement and Analysis of Angle-Resolved Photoemission Extended-Fine Structure Data: Application to c(2x2)S/Ni(001)",
    Phys. Rev. B 34 (1986) 3807-3819.
  • W. Wurth, E. Hudeczek, J.J. Weimer und E. Umbach,
    "New Information on CO+K Coadsorption on Ru(001) by Analysis of Angle-Resolved Auger Lineshapes",
    Surf. Sci. 173 (1986) L619-626.
  • J.J. Weimer, E. Umbach, and D. Menzel,
    "The Properties of K and Coadsorbed CO+K on Ru(001). Part I: Adsorption, Desorption and Structure",
    Surf. Sci. 155 (1985) 132-152.
  • J.J. Weimer, E. Umbach, and D. Menzel,
    "The Properties of K and Coadsorbed CO+K on Ru(001). Part II: Electronic Structure",
    Surf. Sci. 159 (1985) 83-107.
  • P. Morgen, W. Wurth, and E. Umbach,
    "Oxygen Adsorption on Si(111) in Different Modifications: 7x7, 1x1; Ni, and Sputtered",
    Surf. Sci. 152 (1985) 1086-1095.
  • U. Höfer, P. Morgen, W. Wurth, and E. Umbach,
    "A Metastable Molecular Precursor for the Dissociative Adsorption of Oxygen on Si(111)",
    Phys. Rev. Lett. 55 (1985) 2979-2982.
  • E. Umbach,
    "Photoemission Studies of Coadsorbate Interactions in Mixed Overlayers",
    Proceedings of the 3S'85 Conference, Obertraun 1985, p. 53-63.
  • E. Umbach,
    "Study of Adsorbate Interactions by Electron Spectroscopies",
    Physica 127B (1984) 240-245.
  • E. Umbach, and Z. Hussain,
    "Angle Dependent Changes of Auger Line Shapes from Adsorbed Molecules",
    Phys. Rev. Lett. 52 (1984) 457-460.
  • E. Umbach,
    "On the Interpretation of XPS Lineshapes of Weakly Chemisorbed N2 on Transition Metals",
    Solid State Commun. 51 (1984) 365-369.
  • J.J. Weimer and E. Umbach,
    "Bonding and Electronic Structure of Coadsorbed CO and K on Ru(001)",
    Phys. Rev. B 30 (1984) 4863-4866.
  • E. Umbach und D. Menzel,
    "An XPS Study of Desorption and Dissociation Kinetics of CO on W(110)",
    Surf. Sci. 135 (1983) 199-224.
  • J.C. Fuggle, E. Umbach, R. Kakoschke, and D. Menzel,
    "High Resolution Auger Spectra of Adsorbates",
    J. Electron Spectr. 26 (1982) 111-132.
  • E. Umbach,
    "Satellite Structures in Photoemission Spectra from Different Types of Adsorbates",
    Surf. Sci. 117 (1982) 482-502.
  • J.G. Tobin, L.E. Klebanoff, D.H. Rosenblatt, R.F. Davis, E. Umbach, A.G. Baca, D.A. Shirley, Y. Huang, W.M. Kang, and S.Y. Tong,
    "Normal Photoelectron Diffraction of O/Cu(100): A Surface Structure Determination",
    Phys. Rev. B 26 (1982) 7076-7078.
  • M.J. Breitschafter, E. Umbach, and D. Menzel,
    "An Electron Spectroscopic Investigation of the Adsorption of NO on Ni(111)",
    Surf. Sci. 109 (1981) 493-511.
  • E. Umbach and D. Menzel,
    "Horizontal and Vertical Configurations of Molecular N2O on W(110) and Ru(001)",
    Chem. Phys. Lett. 84 (1981) 491-496.
  • P. Feulner, S. Kulkarni, E. Umbach, and D. Menzel,
    "A Multimethod Study of the Adsorption of NO on Ru(001): II. Thermal Desorption and LEED Results",
    Surf. Sci. 99 (1980) 489-506.
  • D. Menzel and E. Umbach,
    "NO Adsorption on the Close-Packed Faces of Ni, Ru and W. A Comparison",
    Proc. 4th Int. Conf. Sol. Surf. and 3rd Eur. Conf. Surf. Sci., Eds.: D.A. Degras et al., Paris 1980, p.260-262.
  • E. Umbach, A. Schichl, and D. Menzel,
    "Angle-Dependent Valence Photoemission from Adsorbed Molecular Nitrogen.
    A Comparison of Measurements and Model Calculations",
    Solid State Commun. 36 (1980) 93-97.
  • E. Umbach, S. Kulkarni, P. Feulner, and D. Menzel,
    "A Multimethod Study of the Adsorption of NO on Ru(001): I. XPS, UPS and XAES Measurements",
    Surf. Sci. 88 (1979) 65-94.
  • R.I. Masel, E. Umbach, J.C. Fuggle, and D. Menzel,
    "XPS, UPS and XAES Studies of the Adsorption of Nitrogen, Oxygen and Nitrogen Oxides on W(110) at 300 K and 100 K: II. Adsorption of NO",
    Surf. Sci. 79 (1979) 26-38.
  • J.C. Fuggle, E. Umbach, D. Menzel, K. Wandelt, and C.R. Brundle,
    "Adsorbate Line Shapes and Multiple Lines in XPS; Comparison of Theory and Experiment",
    Solid State Commun. 27 (1978) 65-69.
  • J.C. Fuggle, E. Umbach, P. Feulner, and D. Menzel,
    "Electron Induced Dissociation of CO on Ru(001)",
    Surf. Sci. 64 (1977) 69-84.
  • E. Umbach, J.C. Fuggle, and D. Menzel,
    "Adsorbate Characterization by Correlation of Various Photoelectron Spectroscopies: CO on W(100)",
    J. Electron Spectr. 10 (1977) 15-34.
  • J.C. Fuggle, E. Umbach, and D. Menzel,
    "X-ray Excited Auger Spectra (XAES) from Chemisorbed Species",
    Solid State Commun. 20 (1976) 89-92.

 

 

Mechanismen von Röntgenabsorption, Photoemission und Augerzerfall

 

1993
  • A. Klekamp und E. Umbach,
    "Substrate-Dependent UV-Induced Dissociation of Physisorbed SF6 in the Monolayer Regime",
    J. Phys.: Condens. Matter 5 (1993) L67-L72.
  • P. Maciejewski, U. Höfer, W. Wurth und E. Umbach,
    "Determination of Adsorbate Orientation by means of Angle-Resolved Auger Fine Structure: CO on Ni(110)",
    J. Electron Spectr. 62 (1993) 1-22.

 

1992
  • A. Klekamp und E. Umbach,
    "Energy Dependence of UPS Peak Intensities of Physisorbed SF<sub>6</sub> Layers: Influence of the IMFP",
    Surf. Interface Anal. 18 (1992) 439-442.
  • W. Wurth, D. Menzel und E. Umbach,
    "Reply to `Dynamics of Core Hole Decay in Adsorbates',"
    Phys. Rev. B 45 (1992) 3868-3870.

 

1991
  • W. Weiss und E. Umbach,
    "Intensity Anomalies in Adsorbate Photoemission Spectra for Varying Surface Composition: Xe/Ni(111) and Xe/Na/Ni(111)",
    Surf. Sci. 249 (1991) L333-L337.

 

1990
  • U. Höfer und E. Umbach,
    "Vibrational Excitation in UV-Photoemission of Adsorbates",
    J. Electron Spectr. 54/55 (1990) 591-600.
  • A. Klekamp, G. Brosig und E. Umbach,
    "Adsorption, Screening Dynamics, and Stimulated Dissociation of SF<sub>6</sub> on Ni(111)",
    Vacuum 41, 1-3 (1990) 728-729.
  • U. Höfer, M. Breitschafter und E. Umbach,
    "Information from Vibration-Resolved UV-Photoemission Spectra of Physisorbates",
    Vacuum 41, 1-3 (1990) 431-432.
  • A. Klekamp und E. Umbach,
    "Photon-Induced Dissociation of Physisorbed SF<sub>6</sub> on Ni(111)",
    Chem. Phys. Lett. 171 (1990) 233-238.
  • U. Höfer, M.J. Breitschafter und E. Umbach,
    "Photoemission Lineshapes of Adsorbates: Conclusions from the Analysis of Vibration-Resolved N<sub>2</sub> Spectra",
    Phys. Rev. Lett. 64 (1990) 3050-3053.
  • W. Wurth, D.J. Coulman, A. Puschmann, D. Menzel und E. Umbach,
    "Relation between X-ray Photoemission Binding Energies and Absorption Resonance Energies for CO Adsorbates",
    Phys. Rev. B 41 (1990) 12933-12936.

 

1988-1982
  • W. Huschka, D. Ross, M. Maier, and E. Umbach,
    "Calibrated Binding Energies of Some Core Levels in the Energy Range between 1.5 and 4 keV",
    J. Electron Spectr. 46 (1988) 273-276.
  • W. Wurth, C. Schneider, R. Treichler, D. Menzel und E. Umbach,
    "Decay of `Autoionizing' Core Hole States in Adsorbed CO Molecules",
    Phys. Rev. B 37 (1988) 8725-8729.
  • W. Wurth, C. Schneider, R. Treichler, E. Umbach und D. Menzel,
    "Evolution of Adsorbate Core Hole States after Bound and Continuum Primary Excitation: Relaxation vs. Decay",
    Phys. Rev. B 35 (1987) 7741-7744.
  • E. Umbach und Z. Hussain,
    "Angle Dependent Changes of Auger Line Shapes from Adsorbed Molecules",
    Phys. Rev. Lett. 52 (1984) 457-460.
  • E. Umbach,
    "Satellite Structures in Photoemission Spectra from Different Types of Adsorbates",
    Surf. Sci. 117 (1982) 482-502.
  • J.C. Fuggle, E. Umbach, R. Kakoschke und D. Menzel,
    "High Resolution Auger Spectra of Adsorbates",
    J. Electron Spectr. 26 (1982) 111-132.

 

 

Festkörperoberflächen (ohne Halbleiter)



2007

 

  • F. Reinert, B. Eltner, G. Nicolay, F. Forster, S. Schmidt und S. Hüfner,
    "The electron-phonon self-energy of metallic systems determined by angular resolved high-resolution photoemission",
    Physica B 351 (2007) 229-234.

 

1996-1982

 

  • K. Glöckler, M. Sokolowski, A. Soukopp und E. Umbach,
    "Initial Growth of Insulating Overlayers Observed by STM with Atomic Resolution: NaCl on Ge(100)",
    Phys. Rev. B 54 (1996) 7705-7708.
  • H.-J. Freund and E. Umbach, Eds.,
    "Adsorption on Ordered Surfaces of Ionic Solids and Thin Films",
    Springer Series in Surface Science, Vol. 33, Springer (Heidelberg) 1993.
  • P.V. Nagarkar, S.K. Kulkarni und E. Umbach,
    "Surface Oxidation Investigation on Ni<sub>36</sub>Fe<sub>32</sub>Cr<sub>14</sub>P<sub>12</sub>B<sub>6</sub> Glass Using Angle-Resolved XPS",
    Appl. Surf. Sci. 29 (1987) 194-222.
  • Z. Hussain, E. Umbach, J.J. Barton, J.G. Tobin, and D.A. Shirley,
    "Angle-Resolved Photoemission Study of the Valence Bands of W(110) in the Photon Energy Range 1100 - 1250 eV: Observation of Strong Direct Transitions and Phonon Effects",
    Phys. Rev. B 25 (1982) 672-676.

 

 

Experimentelle Entwicklungen; Mikrospektroskopie

 

2009

 

  • M. Blum, L. Weinhardt, O. Fuchs, M. Bär, Y. Zhang, M. Weigand, S. Krause, S. Pookpanratana, T. Hofmann, W. Yang, J. D. Denlinger, E. Umbach, and C. Heske,
    "Solid and liquid spectroscopic analysis (SALSA) -- a soft x-ray spectroscopy endstation with a novel flow-through liquid cell",
    Rev. Sci. Instr. 80, 123102 (2009)

  • O. Fuchs, L. Weinhardt, M. Blum, M. Weigand, E. Umbach, M. Bär, C. Heske, J. Denlinger, Y.-D. Chuang, W. McKinney, Z. Hussain, E. Gullikson, M. Jones, P. Batson, B. Nelles, and R. Follarth,
    "High-Resolution, high-transmission soft x-ray spectrometer for the study of biological samples" ,
     Rev. Sci. Instrum. 80, 063103 (2009)

 

2008

 

  • O. Fuchs, F. Maier, L. Weinhardt, M. Weigand, M. Blum, M. Zharnikov, J. Denlinger, M. Grunze, C. Heske, and E. Umbach,
    "A liquid flow cell to study the electronic structure of liquids with soft X-rays",
    Nucl. Instrum. Meth. A 585, 172 (2008).

 

2007

 

  • D. Batchelor, T. Schmidt, R. Follath, C. Jung, R. Fink, M. Knupfer, A. Schöll, T. Noll, F. Siewert, B. Buchner, E. Umbach,
    "An energy-dispersive VUV beamline for NEXAFS and other CFS/CIS studies",
    Nuclear Instruments and Methods  in Physics Research Section A, 575 (2007) 470.

 

2005

 

  • M. Escher, N. Weber, M. Merkel, B. Krömker, D. Funnemann, S. Schmidt, F. Reinert, F. Forster, S. Hüfner, P. Bernhard, Ch. Ziethen, H. J. Elmers und G. Schönhense,
    "NanoESCA: imaging UPS and XPS with high energy resolution",
    J. Elec. Spectrosc. Relat. Phenom. 144 (2005) 1179-1182.
  • M. Escher, N. Weber, M. Merkel, C. Ziethen, P. Bernhard, G. Schönhense, S. Schmidt, F. Forster, F. Reinert, B. Krömker und D. Funnemann,
    "Nanoelectron spectroscopy for chemical analysis: a novel energy filter for imaging x-ray photoemission spectroscopy",
    J. Phys. C 17 (2005) S1329-S1338.
  • S. Schmidt, N. Weber, H.-J. Elmers, F. Forster, F. Reinert, S. Hüfner, M. Escher, M. Merkel, B. Krömker und D. Funnemann,
    "Quantitative microscopy of magnetic domains in Fe(100) by core-level x-ray photoelectron spectroscopy", 
    Phys. Rev. B 72 (2005) 064429.

 

2003

 

  • A. Schöll, Y. Zou, T. Schmidt, R. Fink, and E. Umbach,
    "Energy Calibration and Intensity Normalization in High-Resolution NEXAFS Spectroscopy",
    J. Electron Spectrosc. 129 (2003) 1-8.

 

2002

 

  • Th. Schmidt, U. Groh, R. Fink, E. Umbach, O. Schaff, W. Engel, B. Richter, H. Kuhlenbeck, R. Schlögl, H.-J. Freund, A.M. Bradshaw, D. Preikszas, P. Hartel, R. Spehr, H. Rose, G. Lilienkamp, E. Bauer, and G. Benner,
    "XPEEM with Energy-Filtering: Advantages and First Results from the SMART-Project",
    Surf. Rev. Lett. 9 (2002) 223-232.

 

1998

 

  • R. Wichtendahl, R. Fink, H. Kuhlenbeck, D. Preikszas, H. Rose, R. Spehr, P. Hertel, W. Engel, R. Schlögl, H.J. Freund, A.M. Bradshaw, G. Lilienkamp, T. Schmidt, E. Bauer, G. Benner, and E. Umbach,
    "SMART - an Aberration-corrected XPEEM/LEEM with Energy Filter",
    Surf. Rev. Lett. 5 (1998) 1249-1256.
  • J. Thieme, G. Schmahl, D. Rudolph, and E. Umbach (Eds.),
    "X-ray Microscopy and Spectromicroscopy",
    Springer (Heidelberg 1998).
  • M. Weiss, V. Wüstenhagen, R. Fink, C. Heske, and E. Umbach,
    "An Improved Microprobe Using Direct Undulator Radiation",
    in: "X-ray Microscopy V", G. Schmahl, D. Rudolph, J. Thieme, and E. Umbach (eds.), Springer (Heidelberg 1998), p.15-24.
  • W. Engel, R. Degenhardt, A.M. Bradshaw, W. Erlebach, K. Ihmann, H. Kuhlenbeck, R. Wichtendahl, H.J. Freund, R. Schlögl, D. Preikszas, H. Rose, R. Spehr, P. Hertel, R. Fink, M. Weiss, E. Umbach, G. Lilienkamp, T. Schmidt, E. Bauer, and G. Benner,
    "Concept and Design of the SMART Spectromicroscope at BESSY II",
    in: "X-ray Microscopy V", G. Schmahl, D. Rudolph, J. Thieme, and E. Umbach (eds.), Springer (Heidelberg 1998), p.55-66.

 

1997

 

  • R. Fink, M. Weiss, V. Wüstenhagen, P. Väterlein und E. Umbach,
    "Some Spectro-Microscopy Developments at BESSY",
    in: "Chemical, Structural, and Electronic Analysis of Heterogeneous Surfaces on the Nano-meter Scale",
    Kluwer Academic Publ. (Dordrecht 1997) 93-102.
  • M. Weiss, V. Wüstenhagen, R. Fink und E. Umbach,
    "PISAM, a Photon-induced Scanning Auger Microscope",
    J. Electron Spectr. 84 (1997) 9-28.
  • R. Fink, M. Weiss, E. Umbach, D. Preikszas, H. Rose, R. Spehr, P. Hertel, W. Engel, R. Degenhardt, H. Kuhlenbeck, R. Wichtendahl, W. Erlebach, K. Ihmann, R. Schlögl, H.J. Freund, A.M. Bradshaw, G. Lilienkamp, T. Schmidt, E. Bauer und G. Benner,
    "A Planned Ultrahigh-resolution Spectro-microscope for BESSY II",
    J. Electron Spectr. 84 (1997) 231-250.

 

1995

 

  • P. Väterlein, V. Wüstenhagen und E. Umbach,
    "Direct Writing of Mo Microstructures Using High Brilliance Synchrotron Radiation",
    Appl. Phys. Lett. 66 (1995) 2200-2202.
  • E. Umbach,
    "Micro-Spectroscopy with High Spatial Resolution",
    Physica Scripta B208/209 (1995) 193-198.

 

1994

 

  • M. Weiss, V. Wüstenhagen and E. Umbach,
    "A Grazing Incidence Mirror for a New Microspectroscope Using Soft X-ray Undulator Radiation",
    Proc. SPIE 2279 (1994) 2-11.

 

1993

 

  • P. Väterlein, V. Wüstenhagen, M. Weiß, J. Taborski und E. Umbach,
    "Mask-less Writing with the PISAM",
    Appl. Surf. Sci. 70/71 (1993) 278-282.

 

1990

 

  • V. Wüstenhagen, M. Schneider, J. Taborski, W. Weiss and E. Umbach,
    "Concept and Realization of a Photon-Induced Scanning Auger Microscope",
    Vacuum 41, 7-9 (1990) 1577-1580.

 

1989-1982

 

  • H. Winick, R. Boyce, G. Brown, N. Hower, Z. Hussain, T. Pate, and E. Umbach,
    "Undulator Studies at SSRL",
    Nuclear Instr. Methods 208 (1983) 127-137.
  • Z. Hussain, J.J. Barton, J.J. Bahr, E. Umbach, and D.A. Shirley,
    "Monochromator Crystals for Synchrotron Radiation Use in the Energy Region 550 - 5000 eV",
    Nuclear Instr. Methods 208 (1983) 333-334.
  • W. Gudat and E. Umbach,
    "Studie über einen Multipol-Wiggler bei BESSY. Study of a Multipol-Wiggler for BESSY",
    Technical report, BESSY TB 39/1983.
  • Z. Hussain, E. Umbach, D.A. Shirley, J. Stöhr, and J. Feldhaus,
    "Performance and Application of a Double Crystal Monochromator in the Energy Region 800 < hv < 4500 eV",
    Nuclear Instr. Methods 195 (1982) 115-131.

 

 

Weichröntgenspektroskopie von Festkörpern und Flüssigkeiten

 

2009
  • L. Weinhardt, O. Fuchs, A. Fleszar, M. Bär, M. Blum, M. Weigand, J.D. Denlinger, W. Yang, W. Hanke, E. Umbach, and C. Heske,
    "Resonant inelastic soft x-ray scattering of CdS: A two-dimensional electronic structure map approach",
    Phys. Rev. B 79, 165305 (2009)

  • O. Fuchs, M. Zharnikov, L. Weinhardt, M. Blum, M. Weigand, Y. Zubavichus, M. Bär, F. Maier, W. Yang, J. D. Denlinger, C. Heske, M. Grunze, and E. Umbach,
    Reply to Comment on "Isotope and temperature effects in liquid water probed by x-ray absorption and resonant x-ray emission spectroscopy" ,
    Phys. Rev. Lett. 100, 249802 (2008)
2008
  • O. Fuchs, M. Zharnikov, L. Weinhardt, M. Blum, M. Weigand, Y. Zubavichus, M. Bär, F. Maier, W. Yang, J. D. Denlinger, C. Heske, M. Grunze, and E. Umbach,
    "Isotope and temperature effects in liquid water probed by x-ray absorption and resonant x-ray emission spectroscopy",
    Phys. Rev. Lett. 100, 027801 (2008).

 

2007
  • L. Weinhardt, O. Fuchs, E. Umbach, C. Heske, A. Fleszar, W. Hanke, and J.D. Denlinger,
    "Resonant inelastic soft x-ray scattering, x-ray absorption spectroscopy, and density functional theory calculations of the electronic band structure of CdS"
    Phys. Rev. B, 165207 (2007).

 

2006
  • D. Eich, O. Fuchs, U. Groh, L. Weinhardt, R. Fink, E. Umbach, C. Heske, A. Fleszar, W. Hanke, E.K.U. Gross, C. Bostedt, T. van Buuren, N. Franco, L.J. Terminello, M. Keim, G. Reuscher, H. Lugauer, and A. Waag,
    "Resonant inelastic soft x-ray scattering of Be chalcogenides",
    Phys. Rev. B 73, 115212 (2006).

 

2005
  • M. Odelius, H. Ogasawara, D. Nordlund, O. Fuchs, L. Weinhardt, F. Maier, E. Umbach, C. Heske, Y. Zubavichus, M. Grunze, J.D. Denlinger, L.G.M. Pettersson, and A. Nilsson,
    "Ultra-fast Dynamics in Water probed by X-ray Emission Spectroscopy",
    Phys. Rev. Lett. 94, 227401 (2005).

 

2004
  • T. Strunskus, O. Fuchs, L. Weinhardt, C. Heske, M. Guraya, M. Muhler, V. Staemmler, and Ch. Wöll,
    "The valence electronic structure of zinc oxide powders as determined by X-ray emission spectroscopy: variation of electronic structure with particle size",
    J. Electron Spectrosc. Rel. Phenom. 134, 183-189 (2004).

 

 

Untersuchungen an Nanopartikeln

 

2009
  • C. I. Müller, C. Lambert, M. Steeger, F. Forster, M. Wiessner, A. Schöll, F. Reinert, M. Kamp
    "Mixed-valence interactions in triarylamine-gold-nanoparticle conjugates"
    Chemical Communications, 41, 6213-6215 (2009)

2007
  • F. Niederdraenk, K. Seufert, P. Luczak, S.K. Kulkarni, C. Chory, R.B. Neder, and C. Kumpf,
    "Structure of small II-VI semiconductor nanoparticles: A new approach based on powder diffraction"
    phys. stat. sol. (c) 4(9), 3234-3243 (2007).
  • C. Barglik-Chory, R. Neder, V. Korsunskiy, F. Niederdraenk, C. Kumpf, E. Umbach, M. Schumm, M. Lentze, J. Geurts, G. Astakhov, W. Ossau, and G. Müller,
    "Influence of liquid-phase synthesis parameters on particle sizes and structural properties of nanocrystalline ZnO powders"
    phys. stat. sol. (c) 4(9), 3260-3269 (2007).

 

2006
  • C. Kumpf,
    "Structure determination of very small (1-5~nm) nano-particles"
    Appl. Phys. A 85 (4), 337-343 (2006).

 

2005
  • Kumpf, R. Neder, F. Niederdraenk, P. Luczak, A. Stahl, M. Scheuermann, S.K. Kulkarni, C. Barglik-Chory, S. Joshi, C. Heske, and E. Umbach,
    "Structure determination of CdS and ZnS Nanoparticles: Direct Modeling of Synchrotron diffraction Data",
    J. Chem. Phys. 123 (2005) 224707.

 

2004
  • S.S. Joshi, R. Fink, C. Kumpf, T. Schmidt, C. Heske, E. Umbach, and S.K. Kulkarni,
    "High-Resolution Photoemission Study of Monodispersed CdS Nanoparticles: Origin of Different S-Components, Beam Damage, and Sample Preparation",
    Phys. Rev. B (2004).

 

2003
  • Ch. Barglik-Chory, D. Buchold, M. Schmitt, W. Kiefer, C. Heske, C. Kumpf, O. Fuchs, L. Weinhardt, A. Stahl, E. Umbach, M. Lentze, J. Geurts, and G. Müller,
    "Synthesis, Structure, and Spectroscopic Characterization of Water-Soluble CdS Nanoparticles",
    Chem. Phys. Lett. 379 (2003) 443-451.
  • A.S. Ethiraj, N. Hebalkar, S.K. Kulkarni, R. Pasricha, J. Urban, C. Dem, M. Schmitt, W. Kiefer, L. Weinhardt, S. Joshi, R. Fink, C. Heske, C. Kumpf, and E. Umbach,
    "Enhancement of photoluminescence in manganese doped ZnS nanoparticles due to a silica shell",
    J. Chem. Phys. 118, 8945-8953 (2003).
    Selected for the Virtual Journal of Nanoscale Science & Technology 7(19), 2003.

 

2001
  • S.K. Kulkarni, U. Winkler, N. Deshmukh, P.H. Borse, R. Fink, and E. Umbach,
    "Investigations of Chemically Capped CdS and ZnS Nanoparticles",
    Appl. Surf. Sci. 169/170 (2001) 438-446.

 

1999
  • U. Winkler, D. Eich, Z.H. Chen, R. Fink, S.K. Kulkarni, and E. Umbach,
    "Thermal Behaviour of CdS Nanoparticles Investigated by High Resolution Photoelectron Spectroscopy",
    Phys. Stat. Solidi (a) 173 (1999) 253-259.
  • U. Winkler, D. Eich, Z.H. Chen, R. Fink, S.K. Kulkarni, and E. Umbach,
    "Detailed Investigation of CdS-nanoparticles Surfaces by High-resolution Photoelectron Spectroscopy",
    Chem. Phys. Lett. 306 (1999) 95-102.

 

Weitere Publikationen

 

2004

 

  • Y. Zubavichus, M. Zharnikov, A. Shaporenko, O. Fuchs, L. Weinhardt, C. Heske, E. Umbach, J.D. Denlinger, and M. Grunze,
    "Soft X-ray induced decomposition of phenylalanine and tyrosine: a comparative study",
    J. Phys. Chem. A 108, 4557-4565 (2004).
  • Y. Zubavichus, M. Grunze, O. Fuchs, L. Weinhardt, C. Heske, E. Umbach, and J. D. Denlinger,
    "Soft X-ray induced decomposition of amino acids: a time-resolved XPS, mass-spectrometry, and NEXAFS study",
    Radiat. Res. 161, 346-358 (2004).