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arXiv · 1006.0886

Magnetic quantum oscillations of the topological insulator surface states

Zhigang Wang·Zhen-Guo Fu·Shuang-Xi Wang·Ping Zhang
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Abstract

We study quantum oscillations of the magnetization in Bi$_{2}$Se$_{3}$(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 new features is given and the subsequent effects on the magnetic susceptibility and Hall conductance are also discussed.

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Zhigang Wang, Zhen-Guo Fu, Shuang-Xi Wang, Ping Zhang. 2011-08-02. Magnetic quantum oscillations of the topological insulator surface states. https://doi.org/10.1103/physrevb.82.085429

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