Fakultät für Physik und Astronomie

    SFB Extra Seminar

    "Quantum Sensing of Quantum Materials"
    Datum: 09.12.2019, 16:00 - 17:30 Uhr
    Kategorie: Seminar
    Ort: Hubland Süd, Geb. P4 (Naturwissenschaftlicher Hörsaalbau), HS 5
    Veranstalter: SFB 1170 ToCoTronics
    Vortragende*r: Prof. Amir Yacoby - Harvard University

    The magnetic fields generated by spins and currents provide a unique window into the physics of
    correlated-electron materials and devices. Proposed only a decade ago, magnetometry based on the
    electron spin of nitrogen-vacancy (NV) defects in diamond is emerging as a platform that is
    exceptionally suited for probing condensed matter systems: it can be operated from cryogenic
    temperatures to above room temperature, has a dynamic range spanning from DC to GHz, and
    allows sensor-sample distances as small as a few nanometers. As such, NV magnetometry provides
    access to static and dynamic magnetic and electronic phenomena with nanoscale spatial resolution.
    While pioneering work focused on proof-of-principle demonstrations of its nanoscale imaging
    resolution and magnetic field sensitivity, now experiments are starting to probe the correlated-
    electron physics of magnets and superconductors and to explore the current distributions in low-
    dimensional materials. In this talk, I will review some of our recent work that uses NV center
    magnetometry to image skyrmions in thin magnetic films, measure the spin chemical potential in
    magnetic insulators, and image hydrodynamic electron flow in graphene.