SKM 2023 – scientific programme
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O: Fachverband Oberflächenphysik
O 36: Poster: 2D Materials II
O 36.12: Poster
Tuesday, March 28, 2023, 18:00–20:00, P2/EG
Unstrained Sb Bilayers on InSb(111)A — Bing Liu1,2, •Stefan Enzner1,3, Tim Wagner1,2, Philipp Eck1,3, Martin Kamp2, Giorgio Sangiovanni1,3, and Ralph Claessen1,2 — 1Würzburg-Dresden Cluster of Excellence ct.qmat, Universität Würzburg, D-97074 Würzburg, Germany — 2Physikalisches Institut, Universität Würzburg, D-97074 Würzburg, Germany — 3Institut für Theoretische Physik und Astrophysik, Universität Würzburg, D-97074 Würzburg, Germany
Antimonene, a hexagonal arrangement of staggered Sb, is a promising topological material, which has been widely investigated on various substrates. Recently, it has been grown strain-free on InSb(111)A by forming a moiré structure, despite exhibiting covalent interface bonds.
The moiré supercell is theoretically approximated with varying interface stackings of primitive cells by means of ab initio DFT calculations. This approach reproduces the main structural and electronic observations. The agreement allowed us, to investigate the competition of intra-layer and interface interactions and explain the reconstruction-free growth.