Controlled large non-reciprocal charge transport in an intrinsic magnetic topological insulator MnBi2Te4

Zhaowei Zhang, Naizhou Wang, Ning Cao, Aifeng Wang, Xiaoyuan Zhou, Kenji Watanabe, Takashi Taniguchi, Binghai Yan () and Wei-bo Gao ()
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Zhaowei Zhang: Nanyang Technological University
Naizhou Wang: Nanyang Technological University
Ning Cao: Chongqing University
Aifeng Wang: Chongqing University
Xiaoyuan Zhou: Chongqing University
Kenji Watanabe: National Institute for Materials Science
Takashi Taniguchi: National Institute for Materials Science
Binghai Yan: Weizmann Institute of Science
Wei-bo Gao: Nanyang Technological University

Nature Communications, 2022, vol. 13, issue 1, 1-6

Abstract: Abstract Symmetries, quantum geometries and electronic correlations are among the most important ingredients of condensed matters, and lead to nontrivial phenomena in experiments, for example, non-reciprocal charge transport. Of particular interest is whether the non-reciprocal transport can be manipulated. Here, we report the controllable large non-reciprocal charge transport in the intrinsic magnetic topological insulator MnBi2Te4. The current direction relevant resistance is observed at chiral edges, which is magnetically switchable, edge position sensitive and stacking sequence controllable. Applying gate voltage can also effectively manipulate the non-reciprocal response. The observation and manipulation of non-reciprocal charge transport reveals the fundamental role of chirality in charge transport of MnBi2Te4, and pave ways to develop van der Waals spintronic devices by chirality engineering.

Date: 2022
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DOI: 10.1038/s41467-022-33705-y

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