2017/05/31 by Alireza Qaiumzadeh, Lars A. Kristiansen, Arne Brataas · 1 citation
Physics and Astronomy · #cond-mat.mes-hall #cond-mat.mtrl-sci
paper · pdf · doi:10.1103/physrevb.97.020402
published as Phys. Rev. B 97, 020402(R) (2018) · 4.5 pages, 3 figures
arxiv created 2018/01/09 · arxiv updated 2018/02/09
In antiferromagnets, the Dzyaloshinskii-Moriya interaction lifts the degeneracy of left- and right-circularly polarized spin waves. This relativistic coupling increases the efficiency of spin-wave-induced domain wall motion and leads to higher drift velocities. We show that in biaxial antiferromagnets, the spin-wave helicity controls both the direction and magnitude of the magnonic force on chiral domain walls. By contrast, in uniaxial antiferromagnets, the magnonic force is propulsive with a helicity dependent strength.