Antiferromagnetic domain wall motion induced by spin waves

EG Tveten, A Qaiumzadeh, A Brataas - Physical review letters, 2014 - APS
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 micromagnetic simulations of an
antiferromagnetic domain wall driven by a localized, alternating magnetic field.

Antiferromagnetic Domain Wall Motion Induced by Spin Waves

E Grytli Tveten, A Qaiumzadeh, A Brataas - arXiv e-prints, 2013 - ui.adsabs.harvard.edu
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.
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