Spin switching in antiferromagnets using Néel-order spin-orbit torques  

作　　者：P Wadley K W Edmonds 

机构地区：[1]School of Physics and Astronomy,University of Nottingham

出　　处：《Chinese Physics B》2018年第10期88-95,共8页中国物理B（英文版）

基　　金：Project supported by EPSRC(Grant No.EP/P019749/1);support from the Royal Society through a University Research Fellowship

摘　　要：Antiferromagnets offer considerable potential for electronic device applications. This article reviews recent demonstrations of spin manipulation in antiferromagnetic devices using applied electrical currents. Due to spin–orbit coupling in environments with particular crystalline or structural symmetries, the electric current can induce an effective magnetic field with a sign that alternates on the lengthscale of the unit cell. The staggered effective field provides an efficient mechanism for switching antiferromagnetic domains and moving antiferromagnetic domain walls, with writing speeds in the terahertz regime.Antiferromagnets offer considerable potential for electronic device applications. This article reviews recent demonstrations of spin manipulation in antiferromagnetic devices using applied electrical currents. Due to spin–orbit coupling in environments with particular crystalline or structural symmetries, the electric current can induce an effective magnetic field with a sign that alternates on the lengthscale of the unit cell. The staggered effective field provides an efficient mechanism for switching antiferromagnetic domains and moving antiferromagnetic domain walls, with writing speeds in the terahertz regime.

关 键 词：SPINTRONICS ANTIFERROMAGNETIC current-induced torques magnetic domains 

分 类 号：O469[理学—凝聚态物理]