Supercurrent-Induced Magnetization Dynamics

TL;DR

This paper explores how supercurrents can induce and control magnetization dynamics in a Josephson junction with ferromagnetic layers, revealing potential for superconducting spintronic applications.

Contribution

It demonstrates supercurrent-induced magnetization switching and identifies conditions favorable for magnetization reversal in a superconducting system.

Findings

Supercurrent can induce magnetization switching.

Conditions for magnetization reversal are clarified.

Potential applications in superconducting spintronics.

Abstract

We investigate supercurrent-induced magnetization dynamics in a Josephson junction with two misaligned ferromagnetic layers, and demonstrate a variety of effects by solving numerically the Landau-Lifshitz-Gilbert equation. In particular, we demonstrate the possibility to obtain supercurrent-induced magnetization switching for an experimentally feasible set of parameters, and clarify the favorable condition for the realization of magnetization reversal. These results constitute a superconducting analogue to conventional current-induced magnetization dynamics and indicate how spin-triplet supercurrents may be utilized for practical purposes in spintronics.