Title

An Increase in TC under Hydrostatic Pressure in the Superconducting Doped Topological Insulator Nb₀.₂₅Bi₂Se₃

Abstract

We report a positive hydrostatic pressure derivative of the superconducting transition temperature in the doped topological insulator Nb0.25Bi2Se3 via dc SQUID magnetometry in pressures up to 0.6 GPa. This result is contrary to reports on the homologues CuxBi2Se3 and SrxBi2Se3 where smooth suppression of TC is observed. This difference may be attributable to an electronic structure composed of multiple bands whereas the other materials in the superconducting doped Bi2Se3 family are believed to be single-band.

Department(s)

Physics

Keywords and Phrases

Nematic Superconductors; Pressure-Enhanced Superconductivity; Superconducting Topological Insulators; Topological Superconductors

International Standard Serial Number (ISSN)

0921-4534

Document Type

Article - Journal

Document Version

Citation

File Type

text

Language(s)

English

Rights

© 2017 Elsevier B.V., All rights reserved.

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