Quantum Oscillations in a Topological Insulator Bi₂Te₂Se with Large Bulk Resistivity (^{6 Ω cm})

Author

Jun Xiong
Ansgar C. Petersen
Dongxia Qu
Yew San Hor, Missouri University of Science and TechnologyFollow
Robert Joseph Cava
Naiphuan Ong

Abstract

We report the observation of prominent Shubnikovde Haas oscillations in a Topological Insulator, Bi₂Te₂Se, with large bulk resistivity (6Ωcm at 4 K). By fitting the SdH oscillations, we infer a large metallicity parameter ^kF?=41, with a surface mobility ( ^μs~2800 ^cm2/Vs) much larger than the bulk mobility ( ^μb~50 ^cm2/Vs). The plot of the index fields ^Bν vs. filling factor ν shows a 12-shift, consistent with massless, Dirac states.

Recommended Citation

J. Xiong et al., "Quantum Oscillations in a Topological Insulator Bi₂Te₂Se with Large Bulk Resistivity (^{6 Ω cm})," Physica E: Low-dimensional Systems and Nanostructures, vol. 44, no. 5, pp. 917 - 920, Elsevier, Feb 2012.

The definitive version is available at https://doi.org/10.1016/j.physe.2011.09.011

Department(s)

Physics

Keywords and Phrases

Bulk Mobility; Bulk Resistivity; Filling Factor; Metallicities; Quantum Oscillations; Shubnikov-de Haas Oscillations; Surface Mobility; Topological Insulators; Superconducting Materials; Electric Insulators

International Standard Serial Number (ISSN)

1386-9477

Document Type

Article - Journal

Document Version

Citation

File Type

text

Language(s)

English

Rights

© 2012 Elsevier, All rights reserved.

Publication Date

01 Feb 2012