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25 January 2025 |
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Article overview
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Edge States of α-Bismuthene Nanostructures | | Sara Salehitaleghani
; Tobias Maerkl
; Pawel J Kowalczyk
; Maxime Le Ster
; Xiaoxiong Wang
; Guang Bian
; Tai-Chang Chiang
; Simon A Brown
; | | Date: |
1 Jan 2023 | | Abstract: | We present a systematic investigation of the edge states of two-dimensional
{alpha}-bismuthene ({alpha}-Bi) structures self-assembled on HOPG substrates,
using scanning tunnelling microscopy and scanning tunnelling spectroscopy. The
measurements are carried out for 3ML, 5ML and 7ML thick Bi structures. Our
spectroscopy studies reveal clear features at the edges of the 5ML and 7ML
thick structures, and the positions of the edge states (ESs) coincide with the
topographical step edges. In contrast, in 3ML structures the ESs appear to be
absent and instead new states are sometimes observed, far from the
topographical edge. These states are associated with a moiré pattern and
result from strain-induced modulation of the topology. Our observations
demonstrate the impact on the edge states of coupling to adjacent structures. | | Source: | arXiv, 2301.00402 | | Services: | Forum | Review | PDF | Favorites | |
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