Fermiology of possible topological superconductor Tl0.5Bi2Te3 derived from hole-doped topological insulator

C. X. Trang, Z. Wang, D. Takane, K. Nakayama, S. Souma, T. Sato, T. Takahashi, A. A. Taskin, Yoichi Ando

Research output: Contribution to journalArticle

2 Citations (Scopus)

Abstract

We have performed angle-resolved photoemission spectroscopy on Tl0.5Bi2Te3, a possible topological superconductor derived from Bi2Te3. We found that the bulk Fermi surface consists of multiple three-dimensional hole pockets surrounding the Z point, produced by the direct hole doping into the valence band. The Dirac-cone surface state is well isolated from the bulk bands, and the surface chemical potential is variable in the entire band-gap range. Tl0.5Bi2Te3 thus provides an excellent platform to realize two-dimensional topological superconductivity through a proximity effect from the superconducting bulk. Also, the observed Fermi-surface topology provides a concrete basis for constructing theoretical models for bulk topological superconductivity in hole-doped topological insulators.

Original languageEnglish
Article number241103
JournalPhysical Review B
Volume93
Issue number24
DOIs
Publication statusPublished - 2016 Jun 13

ASJC Scopus subject areas

  • Electronic, Optical and Magnetic Materials
  • Condensed Matter Physics

Fingerprint Dive into the research topics of 'Fermiology of possible topological superconductor Tl0.5Bi2Te3 derived from hole-doped topological insulator'. Together they form a unique fingerprint.

  • Cite this