Macroscale non-local transfer of superconducting signatures to a ferromagnet in a cavity

TL;DR

This paper demonstrates how incorporating superconductors into cavity spintronics enables macroscale non-local transfer of superconducting signatures to ferromagnets, impacting spintronic device design.

Contribution

It introduces a novel approach to extend non-local spin transfer effects to larger scales using superconductor-ferromagnet systems within cavities.

Findings

Superconductors influence the spin dynamics of distant ferromagnets.

Superconducting a.c. conductivity affects non-local spin transfer.

Potential for new spintronic applications with macroscale control.

Abstract

Cavity spintronics recently heralded non-local magnonic signal transfer between magnetic samples. Here we show that by including superconductors in the cavity, we can make use of these principles to bring composite superconductor--ferromagnet systems to the macroscale. We analyze how a superconductor's a.c. conductivity influences the spin dynamics of a spatially separated magnet, and we discuss the potential impact on spintronic applications.