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Flipping handedness in ferrimagnets

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Controlling the handedness of magnetic excitations in magnetic materials is crucial for magnonic applications. Ferrimagnets provide a promising route.

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Fig. 1: Temperature-dependent magnetic moment, M, and low-energy magnon excitations in a ferromagnet, antiferromagnet and N-type ferrimagnet such as GdCo.
Fig. 2: Conceptual view of a magnon handedness filtering device consisting of an antiferromagnet, a ferrimagnet and a spin Hall metal.

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  1. Materials Science and Technology Division, Oak Ridge National Laboratory, Oak Ridge, TN, USA

    Satoshi Okamoto

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  1. Satoshi Okamoto
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Correspondence to Satoshi Okamoto.

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Okamoto, S. Flipping handedness in ferrimagnets. Nat. Mater. 19, 929–930 (2020). https://doi.org/10.1038/s41563-020-0779-4

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