Electric signature of magnetic domain-wall dynamics

TL;DR

This paper presents a method to electrically characterize magnetic domain-wall dynamics in ferromagnetic nanowires by measuring voltage signals, providing analytical tools for experimental analysis.

Contribution

It introduces a new all-electric measurement procedure to determine key parameters of domain-wall motion with analytical expressions for voltage variation.

Findings

Proposed a practical measurement technique for domain-wall dynamics.

Derived analytical expressions for voltage signals induced by domain-wall motion.

Showed the feasibility of experimental implementation with current technology.

Abstract

We study current-induced domain-wall dynamics in a thin ferromagnetic nanowire. The domain-wall dynamics is described by simple equations with four parameters. We propose the procedure to determine these parameters by all-electric measurements of the time-dependent voltage induced by the domain-wall motion. We provide an analytical expression for the time variation of this voltage. Furthermore, we show that the measurement of the proposed effects is within reach with current experimental techniques.