Antiferromagnetism has a vanishing total magnetization and thus is extremely challenging to manipulate. Now, circularly polarized light is shown to efficiently detect, induce and switch a unique class of antiferromagnets.
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Ahn, Y., Zhao, L. Flipping antiferromagnetism by light. Nat. Mater. 22, 536–537 (2023). https://doi.org/10.1038/s41563-023-01536-x
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DOI: https://doi.org/10.1038/s41563-023-01536-x