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Magnetic-field-induced robust zero Hall plateau state in MnBi2Te4 Chern insulator

Author

Listed:
  • Chang Liu

    (Tsinghua University
    Beijing Academy of Quantum Information Sciences)

  • Yongchao Wang

    (Tsinghua University)

  • Ming Yang

    (Huazhong University of Science and Technology)

  • Jiahao Mao

    (Tsinghua University)

  • Hao Li

    (Tsinghua University
    Tsinghua University)

  • Yaoxin Li

    (Tsinghua University)

  • Jiaheng Li

    (Tsinghua University)

  • Haipeng Zhu

    (Huazhong University of Science and Technology)

  • Junfeng Wang

    (Huazhong University of Science and Technology)

  • Liang Li

    (Huazhong University of Science and Technology)

  • Yang Wu

    (Tsinghua University
    Tsinghua University)

  • Yong Xu

    (Tsinghua University
    RIKEN Center for Emergent Matter Science, Wako
    Frontier Science Center for Quantum Information)

  • Jinsong Zhang

    (Tsinghua University
    Frontier Science Center for Quantum Information)

  • Yayu Wang

    (Tsinghua University
    Frontier Science Center for Quantum Information)

Abstract

The intrinsic antiferromagnetic topological insulator MnBi2Te4 provides an ideal platform for exploring exotic topological quantum phenomena. Recently, the Chern insulator and axion insulator phases have been realized in few-layer MnBi2Te4 devices at low magnetic field regime. However, the fate of MnBi2Te4 in high magnetic field has never been explored in experiment. In this work, we report transport studies of exfoliated MnBi2Te4 flakes in pulsed magnetic fields up to 61.5 T. In the high-field limit, the Chern insulator phase with Chern number C = −1 evolves into a robust zero Hall resistance plateau state. Nonlocal transport measurements and theoretical calculations demonstrate that the charge transport in the zero Hall plateau state is conducted by two counter-propagating edge states that arise from the combined effects of Landau levels and large Zeeman effect in strong magnetic fields. Our result demonstrates the intricate interplay among intrinsic magnetic order, external magnetic field, and nontrivial band topology in MnBi2Te4.

Suggested Citation

  • Chang Liu & Yongchao Wang & Ming Yang & Jiahao Mao & Hao Li & Yaoxin Li & Jiaheng Li & Haipeng Zhu & Junfeng Wang & Liang Li & Yang Wu & Yong Xu & Jinsong Zhang & Yayu Wang, 2021. "Magnetic-field-induced robust zero Hall plateau state in MnBi2Te4 Chern insulator," Nature Communications, Nature, vol. 12(1), pages 1-8, December.
    • Handle: RePEc:nat:natcom:v:12:y:2021:i:1:d:10.1038_s41467-021-25002-x
    DOI: 10.1038/s41467-021-25002-x
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    Cited by:

    1. Yaoxin Li & Yongchao Wang & Zichen Lian & Hao Li & Zhiting Gao & Liangcai Xu & Huan Wang & Rui’e Lu & Longfei Li & Yang Feng & Jinjiang Zhu & Liangyang Liu & Yongqian Wang & Bohan Fu & Shuai Yang & Lu, 2024. "Fabrication-induced even-odd discrepancy of magnetotransport in few-layer MnBi2Te4," Nature Communications, Nature, vol. 15(1), pages 1-9, December.
    2. Jiaqi Cai & Dmitry Ovchinnikov & Zaiyao Fei & Minhao He & Tiancheng Song & Zhong Lin & Chong Wang & David Cobden & Jiun-Haw Chu & Yong-Tao Cui & Cui-Zu Chang & Di Xiao & Jiaqiang Yan & Xiaodong Xu, 2022. "Electric control of a canted-antiferromagnetic Chern insulator," Nature Communications, Nature, vol. 13(1), pages 1-7, December.
    3. Dmitry Ovchinnikov & Jiaqi Cai & Zhong Lin & Zaiyao Fei & Zhaoyu Liu & Yong-Tao Cui & David H. Cobden & Jiun-Haw Chu & Cui-Zu Chang & Di Xiao & Jiaqiang Yan & Xiaodong Xu, 2022. "Topological current divider in a Chern insulator junction," Nature Communications, Nature, vol. 13(1), pages 1-6, December.
    4. Su Kong Chong & Chao Lei & Seng Huat Lee & Jan Jaroszynski & Zhiqiang Mao & Allan H. MacDonald & Kang L. Wang, 2023. "Anomalous Landau quantization in intrinsic magnetic topological insulators," Nature Communications, Nature, vol. 14(1), pages 1-8, December.

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