Antiferromagnetic Domain Wall Motion Induced by Spin Waves

Abstract

Spin waves in antiferromagnets are linearly or circularly polarized. Depending on the polarization, traversing spin waves alter the staggered field in a qualitatively different way. We calculate the drift velocity of a moving domain wall as a result of spin wave mediated forces, and show that the domain wall moves in opposite directions for linearly and circularly polarized waves. The analytical results agree with a micromagnetics simulation of an antiferromagnetic domain wall driven by a localized and alternating magnetic field.

4 pages, 3 figures

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