Local magnetometry measurements on a magnetic Chern insulator suggest that the Berry curvature of the topological band — responsible for the intrinsic magnetism — also enables ultra-low current switching of the magnetization.
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The author declares no competing interests.
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Xie, Y. Berry does both. Nat. Phys. (2023). https://doi.org/10.1038/s41567-023-01982-z