期刊
JOURNAL OF PHYSICS-CONDENSED MATTER
卷 24, 期 2, 页码 -出版社
IOP PUBLISHING LTD
DOI: 10.1088/0953-8984/24/2/024223
关键词
-
资金
- Stichting voor Fundamenteel Onderzoek der Materie (FOM)
- Netherlands Organization for Scientific Research (NWO)
- European Research Council (ERC)
We consider the influence of an electric current on the position of a domain wall in an antiferromagnetic metal. We first microscopically derive an equation of motion for the Neel vector in the presence of current by performing, in the transport steady state, a linear-response calculation in the deviation from collinearity of the antiferromagnet. This equation of motion is then solved variationally for an antiferromagnetic domain wall. We find that, in the absence of dissipative or non-adiabatic coupling between magnetization and current, the current displaces the domain wall by a finite amount and that the domain wall is then intrinsically pinned by the exchange interactions. In the presence of dissipative or non-adiabatic current-to-domain-wall coupling, the domain wall velocity is proportional to the current and is no longer pinned.
作者
我是这篇论文的作者
点击您的名字以认领此论文并将其添加到您的个人资料中。
推荐
暂无数据