Oscillatory behavior of the domain wall dynamics in a curved cylindrical magnetic nanowire

TL;DR

This paper investigates how curvature affects domain wall dynamics in cylindrical magnetic nanowires, revealing increased velocity and oscillatory behavior that could enable new applications in magnetic devices.

Contribution

It demonstrates the impact of curvature on domain wall velocity and oscillations in cylindrical nanowires, a novel insight compared to flat stripe geometries.

Findings

Velocity of domain walls increases with curvature

Transverse domain walls oscillate and rotate with the same frequency in curved wires

Curvature induces oscillatory behavior not seen in flat stripes

Abstract

Understanding the domain wall dynamics is an important issue in modern magnetism. Here we present results of domain wall displacement in curved cylindrical nanowires at a constant magnetic field. We show that the average velocity of a transverse domain wall increases with curvature. Contrary to what it is observed in stripes, in a curved wire the transverse domain wall oscillates along and rotates around the nanowire with the same frequency. These results open the possibility of new oscillation-based applications.