Antiferromagnetic Domain Wall Motion Induced by Spin Waves

摘要

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