Influence of disorder on the perpendicular magnetoresistance of magnetic multilayers

TL;DR

This paper theoretically investigates how different types of disorder, including interface substitutional and bulk disorder, affect the perpendicular magnetoresistance in magnetic multilayers using non-equilibrium Green's function methods.

Contribution

It introduces a theoretical framework to analyze the impact of various disorder types on magnetoresistance in multilayers, expanding understanding of disorder effects in spintronic devices.

Findings

Disorder significantly influences magnetoresistance behavior.

Interface and bulk disorder have distinct effects on electron transport.

The non-equilibrium Green's function approach effectively models disorder impacts.

Abstract

The effect of disorder on the perpendicular magnetoresistance of magnetic multilayers is investigated theoretically. Various kinds of disorder are considered: (i) interface substitutional disorder and (ii) bulk disorder in the various layers and in the leads. The calculations are based upon the non-equilibrium Green's function formalism, together with the recursion method for calculating the real-space Green's function.