作者
Laichuan Shen, Jing Xia, Xichao Zhang, Motohiko Ezawa, Oleg A Tretiakov, Xiaoxi Liu, Guoping Zhao, Yan Zhou
发表日期
2020/1/23
期刊
Physical review letters
卷号
124
期号
3
页码范围
037202
出版商
American Physical Society
简介
A magnetic bimeron is a topologically nontrivial spin texture carrying an integer topological charge, which can be regarded as the counterpart of the skyrmion in easy-plane magnets. The controllable creation and manipulation of bimerons are crucial for practical applications based on topological spin textures. Here, we analytically and numerically study the dynamics of an antiferromagnetic bimeron driven by a spin current. Numerical simulations demonstrate that the spin current can create an isolated bimeron in the antiferromagnetic thin film via the dampinglike spin torque. The spin current can also effectively drive the antiferromagnetic bimeron without a transverse drift. The steady motion of an antiferromagnetic bimeron is analytically derived and is in good agreement with the simulation results. Also, we find that the alternating-current-induced motion of the antiferromagnetic bimeron can be described by the …
引用总数
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