Display Settings:

Format

Send to:

Choose Destination
See comment in PubMed Commons below
Phys Rev Lett. 2010 Jul 16;105(3):036404. Epub 2010 Jul 16.

Single-Dirac-cone topological surface states in the TlBiSe(2) class of topological semiconductors.

Author information

  • 1Department of Physics, Northeastern University, Boston, Massachusetts 02115, USA.

Abstract

We investigate several strong spin-orbit coupling ternary chalcogenides related to the (Pb,Sn)Te series of compounds. Our first-principles calculations predict the low-temperature rhombohedral ordered phase in TlBiTe₂, TlBiSe₂, and TlSbX₂ (X=Te, Se, S) to be topologically nontrivial. We identify the specific surface termination that realizes the single Dirac cone through first-principles surface state computations. This termination minimizes effects of dangling bonds, making it favorable for photoemission experiments. In addition, our analysis predicts that thin films of these materials could harbor novel 2D quantum spin Hall states, and support odd-parity topological superconductivity.

PMID:
20867784
[PubMed]
PubMed Commons home

PubMed Commons

0 comments
How to join PubMed Commons

    Supplemental Content

    Full text links

    Icon for American Physical Society
    Loading ...
    Write to the Help Desk