Magnetic domain-wall motion by propagating spin waves

TL;DR

This paper demonstrates through micromagnetic simulations that spin waves can effectively control the motion of magnetic domain walls in nanostripes, with velocity tuned by wave frequency and amplitude, offering a new method for magnetic manipulation.

Contribution

It introduces a novel approach to control domain-wall motion using propagating spin waves tuned to their resonant frequencies, expanding the toolkit for magnetic device control.

Findings

TW motion velocity depends on SW frequency and amplitude

Resonant SW frequencies enhance TW motion efficiency

SWs tuned to TW's intrinsic modes effectively drive domain walls

Abstract

We found by micromagnetic simulations that the motion of a transverse wall (TW) type domain wall in magnetic thin-film nanostripes can be manipulated via interaction with spin waves (SWs) propagating through the TW. The velocity of the TW motion can be controlled by changes of the frequency and amplitude of the propagating SWs. Moreover, the TW motion is efficiently driven by specific SW frequencies that coincide with the resonant frequencies of the local modes existing inside the TW structure. The use of propagating SWs, whose frequencies are tuned to those of the intrinsic TW modes, is an alternative approach for controlling TW motion in nanostripes.