Magnetic quantum oscillations for the surface states of topological insulator Bi2Se3

We study quantum oscillations of the magnetization in Bi2Se3 (111) surface system in the presence of a perpendicular magnetic field. The combined spin-chiral Dirac cone and Landau quantization produce profound effects on the magnetization properties that are fundamentally different from those in the conventional semiconductor two-dimensional electron gas. In particular, we show that the oscillating center in the magnetization chooses to pick up positive or negative values depending on whether the zero-mode Landau level is occupied or empty. An intuitive analysis of these features is given and the subsequent effects on the magnetic susceptibility and Hall conductance are also discussed.

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Made available in DSpace on 2010-09-07T13:11:34Z (GMT). No. of bitstreams: 1 Magnetic quantum oscillations for the surface states of topological insulator Bi2Se3.pdf: 662586 bytes, checksum: 9ebc7a93ac89c341ccdab5079ac3604e (MD5) Previous issue date: 2010

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