Journal
EPL
Volume 90, Issue 3, Pages -Publisher
IOP PUBLISHING LTD
DOI: 10.1209/0295-5075/90/37002
Keywords
-
Categories
Funding
- Department of Energy, Office of Basic Energy Sciences, Division of Materials Sciences and Engineering [DE-AC02-76SF00515]
- Alexander von Humboldt Foundation of Germany
Ask authors/readers for more resources
We predict a new class of three-dimensional topological insulators in thallium-based III-V-VI2 ternary chalcogenides, including TlBiQ(2) and TlSbQ(2) (Q = Te, Se and S). These topological insulators have robust and simple surface states consisting of a single Dirac cone at the G point. The mechanism for topological insulating behavior is elucidated using both first-principle calculations and effective field theory models. Remarkably, one topological insulator in this class, TlBiTe2, is also a superconductor when doped with p-type carriers. We discuss the possibility that this material could be a topological superconductor. Another material, TlSbS2, is on the border between topological insulator and trivial insulator phases, in which a topological phase transition can be driven by pressure.
Authors
I am an author on this paper
Click your name to claim this paper and add it to your profile.
Reviews
Recommended
No Data Available