Title

Superconductivity in CuxBi2Se3 and its Implications for Pairing in the Undoped Topological Insulator

Abstract

Bi2Se3 is one of a handful of known topological insulators. Here we show that copper intercalation in the van der Waals gaps between the Bi2Se3 layers, yielding an electron concentration of ~2x 1020cm-3, results in superconductivity at 3.8 K in CuxBi2Se3 for 0.12≤x≤0.15. This demonstrates that Cooper pairing is possible in Bi2Se3 at accessible temperatures, with implications for studying the physics of topological insulators and potential devices.

Department(s)

Physics

Keywords and Phrases

Cooper Pairing; Copper Intercalation; Electron Concentration; Van Der Waals; Automobile Exhibitions; Superconductivity; Van Der Waals Forces; Topology

International Standard Serial Number (ISSN)

0031-9007

Document Type

Article - Journal

Document Version

Final Version

File Type

text

Language(s)

English

Rights

© 2010 American Physical Society (APS), All rights reserved.

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