Dresden 2020 – wissenschaftliches Programm
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O: Fachverband Oberflächenphysik
O 47: Poster Session - 2D Materials: Electronic Structure, Excitations, etc.
O 47.14: Poster
Dienstag, 17. März 2020, 18:15–20:00, P2/EG
Hot electron dynamics in Stanene/Au(111) — •Marten Düvel1, Germaine Arend1, Daniel Franz Walter Marx1, Jan Philipp Bange1, Jonas Fredrik Pöhls1, Marco Merboldt1, Mahalingam Maniraj2, Daniel Steil1, Marcel Reutzel1, Sabine Steil1, and Stefan Mathias1 — 1I. Physikalisches Institut, Georg-August-Universität Göttingen — 2Institute of Physics, Martin-Luther-Universität Halle-Wittenberg, Halle, Germany
Stanene, the graphene analog with Sn, was recently predicted and has subsequently motivated intense research on the realization of Sn-based ultrathin materials. In our previous work [M. Maniraj et al., Comm. Phys., 2:12, 2019], we found a two-atomic honeycomb superstructure of Sn on Au(111) that shows a Dirac-like band centered at the Γ−point with anti-parallel spin polarization similar to a topological insulator. Here, we use time- and angle-resolved photoelectron spectroscopy to study the electronic structure and dynamics in the unoccupied regime of the band structure of this stanene-like material system.