We predict a coherent nonlocal coupling of ferromagnetic and antiferromagnetic magnetization dynamics via transverse phonon momentum current in a nonmagnetic insulator spacer. This coupling requires perpendicular alignment of magnetic moments to the phonon propagation direction. Our results bridge the divide between ferromagnetic and antiferromagnetic spintronics, offering pathways for integrating diverse magnetic elements into spintronic devices.
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Shirdel-Havar et al. (2024) studied this question.
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