A bilayer of two anisotropy-rotated ferromagnetic layers with opposite magnetization acts as a synthetic altermagnet, with d-wave spin splitting and a nonzero anomalous Hall effect when inter-layer spin-orbit coupling is added.
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Synthetic Altermagnets
A bilayer of two anisotropy-rotated ferromagnetic layers with opposite magnetization acts as a synthetic altermagnet, with d-wave spin splitting and a nonzero anomalous Hall effect when inter-layer spin-orbit coupling is added.