Magnetoresistance in metals with embedded magnetic nano-clusters
O. Tsyplyatyev, Vladimir I. Fal'ko
TL;DR
This paper develops a kinetic theory to understand how embedded ferromagnetic nanoclusters affect magnetoresistance in metals, highlighting the role of anisotropy and electron spin depolarization.
Contribution
It introduces a new kinetic model describing magnetoresistance dependence on cluster anisotropy and spin depolarization effects in metals with magnetic nano-clusters.
Findings
Magnetoresistance is maximized when clusters share the same easy-axis anisotropy.
The model predicts how anisotropy influences electron spin depolarization.
The theory provides insights into transport properties in nanostructured magnetic metals.
Abstract
We propose a kinetic theory of transport in metals embedded with ferromagnetic nanoclusters, describing the dependence of the form of magnetoresistance on anisotropy characteristics of the ensemble of clusters and the influence of the electron spin depolarisation by clusters. We note that this effect is strongest when all the clusters have the same intrinsic easy-axis anisotropy.
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