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Quantum corrections to the magnetoconductivity of surface states in three-dimensional topological insulators

Author

Listed:
  • Gang Shi

    (Institute of Physics, Chinese Academy of Sciences
    University of Chinese Academy of Sciences)

  • Fan Gao

    (Institute of Physics, Chinese Academy of Sciences
    University of Chinese Academy of Sciences)

  • Zhilin Li

    (Institute of Physics, Chinese Academy of Sciences
    Songshan Lake Materials Laboratory)

  • Rencong Zhang

    (Institute of Physics, Chinese Academy of Sciences
    University of Chinese Academy of Sciences)

  • Igor Gornyi

    (Karlsruhe Institute of Technology
    Karlsruhe Institute of Technology
    Ioffe Institute)

  • Dmitri Gutman

    (Bar-Ilan University)

  • Yongqing Li

    (Institute of Physics, Chinese Academy of Sciences
    University of Chinese Academy of Sciences
    Songshan Lake Materials Laboratory)

Abstract

The interplay between quantum interference, electron-electron interaction (EEI), and disorder is one of the central themes of condensed matter physics. Such interplay can cause high-order magnetoconductance (MC) corrections in semiconductors with weak spin-orbit coupling (SOC). However, it remains unexplored how the magnetotransport properties are modified by the high-order quantum corrections in the electron systems of symplectic symmetry class, which include topological insulators (TIs), Weyl semimetals, graphene with negligible intervalley scattering, and semiconductors with strong SOC. Here, we extend the theory of quantum conductance corrections to two-dimensional (2D) electron systems with the symplectic symmetry, and study experimentally such physics with dual-gated TI devices in which the transport is dominated by highly tunable surface states. We find that the MC can be enhanced significantly by the second-order interference and the EEI effects, in contrast to the suppression of MC for the systems with orthogonal symmetry. Our work reveals that detailed MC analysis can provide deep insights into the complex electronic processes in TIs, such as the screening and dephasing effects of localized charge puddles, as well as the related particle-hole asymmetry.

Suggested Citation

  • Gang Shi & Fan Gao & Zhilin Li & Rencong Zhang & Igor Gornyi & Dmitri Gutman & Yongqing Li, 2023. "Quantum corrections to the magnetoconductivity of surface states in three-dimensional topological insulators," Nature Communications, Nature, vol. 14(1), pages 1-8, December.
    • Handle: RePEc:nat:natcom:v:14:y:2023:i:1:d:10.1038_s41467-023-38256-4
    DOI: 10.1038/s41467-023-38256-4
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    References listed on IDEAS

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    1. T. Arakane & T. Sato & S. Souma & K. Kosaka & K. Nakayama & M. Komatsu & T. Takahashi & Zhi Ren & Kouji Segawa & Yoichi Ando, 2012. "Tunable Dirac cone in the topological insulator Bi2-xSbxTe3-ySey," Nature Communications, Nature, vol. 3(1), pages 1-5, January.
    2. Jian Liao & Yunbo Ou & Haiwen Liu & Ke He & Xucun Ma & Qi-Kun Xue & Yongqing Li, 2017. "Enhanced electron dephasing in three-dimensional topological insulators," Nature Communications, Nature, vol. 8(1), pages 1-7, December.
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