Please use this identifier to cite or link to this item: https://doi.org/10.1038/s41467-018-03887-5
Title: Interplay of orbital effects and nanoscale strain in topological crystalline insulators
Authors: Walkup, D.
Assaf, B.A.
Scipioni, K.L.
Sankar, R.
Chou, F.
Chang, G.
Lin, H. 
Zeljkovic, I.
Madhavan, V.
Issue Date: 2018
Publisher: Nature Publishing Group
Citation: Walkup, D., Assaf, B.A., Scipioni, K.L., Sankar, R., Chou, F., Chang, G., Lin, H., Zeljkovic, I., Madhavan, V. (2018). Interplay of orbital effects and nanoscale strain in topological crystalline insulators. Nature Communications 9 (1) : 1550. ScholarBank@NUS Repository. https://doi.org/10.1038/s41467-018-03887-5
Rights: Attribution 4.0 International
Abstract: Orbital degrees of freedom can have pronounced effects on the fundamental properties of electrons in solids. In addition to influencing bandwidths, gaps, correlation strength and dispersion, orbital effects have been implicated in generating novel electronic and structural phases. Here we show how the orbital nature of bands can result in non-trivial effects of strain on band structure. We use scanning-tunneling microscopy to study the effects of strain on the electronic structure of a heteroepitaxial thin film of a topological crystalline insulator, SnTe. By studying the effects of uniaxial strain on the band structure we find a surprising effect where strain applied in one direction has the most pronounced influence on the band structure along the perpendicular direction. Our theoretical calculations indicate that this effect arises from the orbital nature of the conduction and valence bands. Our results imply that a microscopic model capturing strain effects must include a consideration of the orbital nature of bands. © 2018 The Author(s).
Source Title: Nature Communications
URI: https://scholarbank.nus.edu.sg/handle/10635/210079
ISSN: 2041-1723
DOI: 10.1038/s41467-018-03887-5
Rights: Attribution 4.0 International
Appears in Collections:Staff Publications
Elements

Show full item record
Files in This Item:
File Description SizeFormatAccess SettingsVersion 
10_1038_s41467-018-03887-5.pdf1.63 MBAdobe PDF

OPEN

NoneView/Download

SCOPUSTM   
Citations

18
checked on Sep 30, 2022

Page view(s)

58
checked on Sep 29, 2022

Google ScholarTM

Check

Altmetric


This item is licensed under a Creative Commons License Creative Commons