Spin wave assisted current induced magnetic domain wall motion

TL;DR

This paper demonstrates that spin waves can enhance the speed of current-driven magnetic domain walls in nanowires, with the effect depending on spin wave frequency and amplitude, but it diminishes at high current densities.

Contribution

It reveals how spin waves can be used to control and improve domain wall motion in magnetic nanowires, a novel approach in spintronics.

Findings

Spin waves increase domain wall velocity when comparable to current-induced speed.

Domain wall speed is tunable via spin wave frequency and amplitude.

High current densities suppress the spin wave effect on domain wall motion.

Abstract

The interaction between the propagating spin waves and the current driven motion of a transverse domain wall in magnetic nanowires is studied by micromagnetic simulations. If the speed of domain walls due to current induced spin transfer torque is comparable to the velocity driven by spin waves, the speed of domain wall is improved by applying spin waves. The domain wall velocity can be manipulated by the frequency and amplitude of spin waves. The effect of spin waves is suppressed in the high current density regime in which the domain wall is mostly driven by current induced spin transfer torque.