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Magneto-resistance up to 60 Tesla in topological insulator Bi2Te3 thin films

We report magneto-transport studies of topological insulator Bi2Te3 thin films grown by pulsed laser deposition. A non-saturating linear-like magneto-resistance (MR) is observed at low temperatures in the magnetic field range from a few Tesla up to 60 Tesla. We demonstrate that the strong linear-lik...

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Bibliographic Details
Published in:Applied physics letters 2012-11, Vol.101 (20)
Main Authors: Zhang, S. X., McDonald, R. D., Shekhter, A., Bi, Z. X., Li, Y., Jia, Q. X., Picraux, S. T.
Format: Article
Language:English
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Summary:We report magneto-transport studies of topological insulator Bi2Te3 thin films grown by pulsed laser deposition. A non-saturating linear-like magneto-resistance (MR) is observed at low temperatures in the magnetic field range from a few Tesla up to 60 Tesla. We demonstrate that the strong linear-like MR at high field can be well understood as the weak antilocalization phenomena described by Hikami-Larkin-Nagaoka theory. Our analysis suggests that in our system, a topological insulator, the elastic scattering time can be longer than the spin-orbit scattering time. We briefly discuss our results in the context of Dirac Fermion physics and “quantum linear magnetoresistance.”
ISSN:0003-6951
1077-3118
DOI:10.1063/1.4766739