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 language||English (US)|
|Journal||Physical Review B - Condensed Matter and Materials Physics|
|State||Published - Jul 17 2012|
All Science Journal Classification (ASJC) codes
- Electronic, Optical and Magnetic Materials
- Condensed Matter Physics