Topological surface states on Bi$_{1-x}$Sb$_x$: Dependence on surface orientation, surface termination and stability

Research output: Contribution to journal/Conference contribution in journal/Contribution to newspaperJournal articleResearchpeer-review

Topological insulators support metallic surface states whose existence is protected by the bulk band structure. It has been predicted early that the topology of the surface state Fermi contour should depend on several factors, such as the surface orientation and termination and this raises the question to what degree a given surface state is protected by the bulk electronic structure upon structural changes. Using tight-binding calculations, we explore this question for the prototypical topological insulator Bi$_{1-x}$Sb$_x$, studying different terminations of the (111) and (110) surfaces. We also consider the implications of the topological protection for the (110) surfaces for the semimetals Bi and Sb
Original languageEnglish
Article number125402
JournalPhysical Review B
Volume89
ISSN2469-9950
DOIs
Publication statusPublished - 4 Mar 2014

See relations at Aarhus University Citationformats

ID: 81229553