Magnetization switching by magnon-mediated spin torque through an antiferromagnetic insulator

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Science  29 Nov 2019:
Vol. 366, Issue 6469, pp. 1125-1128
DOI: 10.1126/science.aav8076

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Toward magnonic devices

The field of magnonics aims to use spin waves (SWs) and their associated quasiparticles—magnons—as carriers of information. Compared with the movement of charge in conventional electronics, a major advantage of SWs is reduced Joule heating. However, SWs are trickier to direct and control. Two groups now go a step further toward magnon-based devices. Han et al. show that in multilayer films, domain walls can be used to change the phase and magnitude of a spin wave. Wang et al. demonstrate how magnon currents can be used to switch the magnetization of an adjacent layer.

Science, this issue p. 1121, p. 1125

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