Phys. Rev. B 103, 054428 (2021)
Skew scattering and side jump of spin wave across magnetic texture
Jin Lan1,2 and Jiang Xiao2,3,4,*
1 Center for Joint Quantum Studies and Department of Physics, School of Science, Tianjin University, 92 Weijin Road, Tianjin 300072, China
2 Department of Physics and State Key Laboratory of Surface Physics, Fudan University, Shanghai 200433, China
3 Institute for Nanoelectronics Devices and Quantum Computing, Fudan University, Shanghai 200433, China
4 Shanghai Research Center for Quantum Sciences, Shanghai 201315, China
* xiaojiang@fudan.edu.cn
ABSTRACT
Spin wave and magnetic texture are two elementary excitations in magnetic systems, and their interaction leads to rich magnetic phenomena. By describing spin wave and magnetic texture using their own collective coordinates, we find that they interact like classical particles traveling in mutual electromagnetic fields. Based on this unified collective coordinate model, we find that both skew scattering and side jump may occur as spin wave passing through magnetic textures. The skew scattering is associated with the magnetic topology of the texture, while the side jump correlates with the total magnetization of the texture. We illustrate the concepts of skew scattering and side jump by investigating the spin wave trajectories across the topological magnetic skyrmion and the topologically trivial magnetic bubble, respectively.
