Lattice-compliant simulations of antiferromagnetic textures and their response to spin-orbit torques

Article

关键词: DOMAIN-WALLS;    NIO;    MAGNETORESISTANCE;    FERROMAGNETISM;    OVERLAYERS;    CHROMIUM;    SURFACES;    NEUTRON;    GROWTH;    WAVES;   

DOI  :  10.1103/PhysRevB.105.014401

来源: SCIE

【 摘 要 】

Spin textures in perfectly ordered antiferromagnetic ultrathin films are evaluated on the basis of atomistic simulations and compared to the results of recent extensions of the (l, m) decomposition model. A comparison between similar textures supported by either a bcc or a fcc lattice shows that the sole inclusion of symmetric Heisenberg exchange interactions suffices to provide, when geometry commands, a natural canting between neighboring s up arrow and s down arrow spins within a texture. Moreover, a pure at lattice points dipole model leads to natural symmetries, in clear disagreement with expectations from the (l, m) model. Inversely, properties such as wall mobility under spin-orbit torques depending mostly on wall geometrical characteristics such as chirality and chirality axis orientation prove, as anticipated, primarily lattice immune.

【 授权许可】

Free