Würzburg ToCoTronics Colloquium
"Creating quantum states of matter atom-by-atom on a semiconductor"
|Datum:||06.07.2023, 16:15 - 18:00 Uhr|
|Ort:||Hubland Süd, Geb. P1 (Physik), HS P (Röntgen HS)|
|Veranstalter:||SFB 1170 ToCoTronics|
|Vortragende*r:||Dr. Xiaochun Huang - Radboud University Nijmegen|
Advances in low-temperature scanning tunnelling microscopy and atomic-scale manipulation enabled the atom-by-atom creation and characterization of quantum states of matter . In recent years, various artificial lattices have been created to emulate the band structure of Dirac, topological, and strongly correlated materials [2-4]. Nevertheless, previous studies mostly relied on using bulk metallic substrates, where the delocalized electrons strongly interact with the patterned atomic lattice, leading to unwanted screening and hybridization effects. In this talk, I will show a new strategy, emulating complex artificial molecular orbitals, based on positioning individual cesium atoms on the surface of semiconducting indium antimonide . This work provides a superior platform for in-depth exploration of the topological phase and many-body physics in the designed lattices.
 Khajetoorians, A. A. et al. Nat. Rev. Phys. 1, 703–715 (2019).
 Gomes, K. K. et al., Nature 483, 306–310 (2012).
 Slot, M. R. et al., Nature Physics 13, 672-676 (2017).
 S. N. Kempkes, et al., Nat. Mater. 18, 1292 (2019).
 E. Sierda, et al., arXiv:2210.06754.
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