Regensburg 2022 – wissenschaftliches Programm

Bereiche | Tage | Auswahl | Suche | Aktualisierungen | Downloads | Hilfe

O: Fachverband Oberflächenphysik

O 18: Poster Monday: 2D Materials 1

O 18.28: Poster

Montag, 5. September 2022, 18:00–20:00, P4

Structural investigation of antimony monolayers on Ag(111) — •Stefanie Hilgers¹, Julian A. Hochhaus^1,2, Malte G. H. Schulte^1,2, and Carsten Westphal^1,2 — ¹TU Dortmund University, Department of Physics, Otto-Hahn-Str. 4a, 44227 Dortmund, Germany — ²DELTA, TU Dortmund, Maria-Goeppert-Mayer-Str. 2, 44227, Dortmund, Germany

Similar to graphene and further elements of the 4th main group, Group-V elements such as antimony are also predicted to have extraordinary electronic properties. Because of the strong spin-orbit coupling and the resulting topological properties, antimony monolayers are of great interest for future electronic applications. Since the structural configuration of 2D-materials has major influence on the electronic properties of the material, structural investigations are highly relevant. In the here presented research we report on the synthesis and structural investigation of antimoy monolayers on Ag(111).

After several cleaning cycles in UHV, antimony is evaporated by a Kudsen cell to deposit monolayers on the Ag(111) surface. The well-known (√3×√3)R30^∘ superstructure can be identified by low-energy electron diffraction (LEED). In addition, a (2√3× 2√3)R30^∘ superstructure can be verified for higher coverages. Furthermore, the real space structure is investigated by scanning tunneling microscopy (STM).