Antiferromagnetic domain wall motion induced by spin waves.
Antiferromagnetic domain wall motion induced by spin waves.
复制标题
DOI：
10.1103/physrevlett.112.147204
复制
发表时间：
2013-11
影响因子：
8.6
通讯作者：
E. G. Tveten;A. Qaiumzadeh;A. Brataas
中科院分区：
文献类型：
--
作者：
E. G. Tveten;A. Qaiumzadeh;A. Brataas
反铁磁体中的自旋波是线性极化或圆极化的。根据极化的不同，穿越的自旋波会以不同的方式改变交错场。我们计算的漂移速度的一个移动的畴壁作为自旋波介导的力量的结果，并显示畴壁的线性和圆偏振波在相反的方向移动。分析结果同意与微磁学模拟的反铁磁畴壁驱动的局部，交变磁场。
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.