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; Wei-bo Gao

doi:10.1038/s41467-022-33705-y

ジャーナル論文 Controlled large non-reciprocal charge transport in an intrinsic magnetic topological insulator MnBi2Te4

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Zhaowei Zhang, Naizhou Wang, Ning Cao, Aifeng Wang, Xiaoyuan Zhou, Kenji Watanabe, Takashi Taniguchi, Binghai Yan, Wei-bo Gao. Controlled large non-reciprocal charge transport in an intrinsic magnetic topological insulator MnBi2Te4. Nature Communications. 2022, 13 (1), 6191. https://doi.org/10.1038/s41467-022-33705-y

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(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. Here we report the 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 septuple layer number controllable. Applying gate voltage can effectively tune the non-reciprocal resistance. The observation and manipulation of non-reciprocal charge transport indicate the fundamental role of chirality in charge transport of MnBi2Te4, and pave ways to develop van der Waals spintronic devices by chirality engineering.

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