Theory of exchange coupling in disordered magnetic multilayers

TL;DR

This paper presents a theoretical analysis of exchange coupling in disordered magnetic multilayers, focusing on how electron interactions influence magnetic ordering transitions.

Contribution

It introduces a model describing the transition from ferromagnetic to noncollinear magnetic ordering based on electron diffusion and splitting effects.

Findings

Transition from ferromagnetic to noncollinear ordering identified

Dependence of magnetic states on electron diffusion and splitting ratios

Theoretical framework for exchange coupling in disordered multilayers

Abstract

We consider mechanism of exchange coupling based on interaction between electrons in nonmagnetic layer. Depending on ratio of inverse time of diffusion of electrons between ferromagnetic layers and ferromagnetic splitting of conducting electrons this mechanism describes transition from ferromagnetic to noncollinear ordering of magnetizations of ferromagnetic layers.