An artificial spin ice, containing two types of nanomagnets, can perform reservoir computing with minor magnetic field loops and spin wave spectra acting as inputs and outputs, respectively.
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Heyderman, L.J. Spin ice devices from nanomagnets. Nat. Nanotechnol. 17, 435–436 (2022). https://doi.org/10.1038/s41565-022-01088-2
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DOI: https://doi.org/10.1038/s41565-022-01088-2