High-field Shubnikov-de Haas oscillations in the topological insulator Bi 2Te 2Se

Jun Xiong, Yongkang Luo, Yuehaw Khoo, Shuang Jia, R. J. Cava, N. P. Ong

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Abstract

We report measurements of the surface Shubnikov-de Haas oscillations (SdH) on crystals of the topological insulator Bi 2Te 2Se. In crystals with large bulk resistivity (∼4 Ωcm at 4 K), we observe ∼15 surface SdH oscillations (to the n=1 Landau level) in magnetic fields B up to 45 T. Extrapolating to the limit 1/B→0, we confirm the 12-shift expected from a Dirac spectrum. The results are consistent with a very small surface Landé g factor.

Original languageEnglish (US)
Article number045314
JournalPhysical Review B - Condensed Matter and Materials Physics
Volume86
Issue number4
DOIs
StatePublished - Jul 17 2012

All Science Journal Classification (ASJC) codes

  • Electronic, Optical and Magnetic Materials
  • Condensed Matter Physics

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