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Article
Reversible tuning of the surface state in a pseudobinary Bi2(Te-Se)3 topological insulator
Physical Review B
Document Type
Article
Disciplines
Publication Date
8-10-2012
DOI
10.1103/PhysRevB.86.085112
Abstract
We use angle-resolved photoemission spectroscopy to study a nontrivial surface state in a pseudobinary Bi2Te2.8Se0.2 topological insulator. We show that, unlike previously studied binaries, this is an intrinsic topological insulator with the conduction bulk band residing well above the chemical potential. Our data indicate that under a good vacuum condition there are no significant aging effects for more than two weeks after cleaving. We also demonstrate that the shift of the Kramers point at low temperature is caused by UV-assisted absorption of molecular hydrogen. Our findings pave the way for applications of these materials in devices and present an easy scheme to tune their properties.
Copyright Owner
American Physical Society
Copyright Date
2012
Language
en
File Format
application/pdf
Citation Information
Rui Jiang, Lin-Lin Wang, Mianliang Huang, R. S. Dhaka, et al.. "Reversible tuning of the surface state in a pseudobinary Bi2(Te-Se)3 topological insulator" Physical Review B Vol. 86 Iss. 8 (2012) p. 085112 Available at: http://works.bepress.com/thomas_lograsso/50/
This article is from Physical Review B 86 (2012): 085112, doi:10.1103/PhysRevB.86.085112.