SurfaceScience21 – wissenschaftliches Programm

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O: Fachverband Oberflächenphysik

O 93: Poster Session VII: Graphene and beyond I

O 93.8: Poster

Donnerstag, 4. März 2021, 10:30–12:30, P

Preparation of antimony monolayers on Ag(111) — •Stefanie Hilgers¹, Julian A. Hochhaus^1,2, Anneke Reinold¹, Malte G. H. Schulte^1,2, and Carsten Westphal^1,2 — ¹Experimentelle Physik I, TU Dortmund, Otto-Hahn-Str. 4a, 44227 Dortmund, Germany — ²DELTA, TU Dortmund, Maria-Goeppert-Mayer-Str. 2, 44227, Dortmund, Germany

In the here presented research, we prepare and investigate antimony monolayers on Ag(111). Similar to graphene, the elements of the 5th main group such as phosphorus, arsenic, and antimony are predicted to have extraordinary electronic properties.

Due to the small lattice mismatch between silver and free-standing antimonene, Ag(111) is a suitable substrate for the preparation of antimony monolayers. The substrate was cleaned by argon sputtering and heating in UHV, while the antimony monolayers were prepared by molecular beam epitaxy (MBE). Auger electron spectroscopy (AES) was used to investigate the chemical surface composition, while structural investigations were carried out using low-energy electron diffraction (LEED) and scanning tunneling microscopy (STM) at room temperature.