Skew scattering and side jump of spin wave across magnetic texture

TL;DR

This paper models the interaction between spin waves and magnetic textures as particle-like behavior, revealing that skew scattering and side jump effects depend on magnetic topology and magnetization, with implications for magnetic phenomena.

Contribution

It introduces a unified collective coordinate model showing how spin waves experience skew scattering and side jump when passing through magnetic textures, linking these effects to topology and magnetization.

Findings

Skew scattering depends on magnetic topology.

Side jump correlates with total magnetization.

Spin wave trajectories are affected by magnetic textures.

Abstract

Spin wave and magnetic texture are two elementary excitations in magnetic systems, and their interaction leads to rich magnetic phenomena. By describing the spin wave and the magnetic texture using their own collective coordinates, we find that they interact as 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 is correlated to 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.