Trang, C. X., Wang, Z., Takane, D., Nakayama, K., Souma, S., Sato, T., Takahashi, T., Taskin, A. A. and Ando, Yoichi 
ORCID: 0000-0002-3553-3355
(2016).
Fermiology of possible topological superconductor Tl0.5Bi2Te3 derived from hole-doped topological insulator.
Phys. Rev. B, 93 (24).
COLLEGE PK:
AMER PHYSICAL SOC.
ISSN 2469-9969
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.
| Item Type: | Journal Article | ||||||||||||||||||||||||||||||||||||||||
| Creators: |
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| URN: | urn:nbn:de:hbz:38-272311 | ||||||||||||||||||||||||||||||||||||||||
| DOI: | 10.1103/PhysRevB.93.241103 | ||||||||||||||||||||||||||||||||||||||||
| Journal or Publication Title: | Phys. Rev. B | ||||||||||||||||||||||||||||||||||||||||
| Volume: | 93 | ||||||||||||||||||||||||||||||||||||||||
| Number: | 24 | ||||||||||||||||||||||||||||||||||||||||
| Date: | 2016 | ||||||||||||||||||||||||||||||||||||||||
| Publisher: | AMER PHYSICAL SOC | ||||||||||||||||||||||||||||||||||||||||
| Place of Publication: | COLLEGE PK | ||||||||||||||||||||||||||||||||||||||||
| ISSN: | 2469-9969 | ||||||||||||||||||||||||||||||||||||||||
| Language: | English | ||||||||||||||||||||||||||||||||||||||||
| Faculty: | Faculty of Mathematics and Natural Sciences | ||||||||||||||||||||||||||||||||||||||||
| Divisions: | Faculty of Mathematics and Natural Sciences > Department of Physics > Institute of Physics II | ||||||||||||||||||||||||||||||||||||||||
| Subjects: | no entry | ||||||||||||||||||||||||||||||||||||||||
| Uncontrolled Keywords: |
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| Refereed: | Yes | ||||||||||||||||||||||||||||||||||||||||
| URI: | http://kups.ub.uni-koeln.de/id/eprint/27231 |
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