Effective resistivity of magnetic multilayers

TL;DR

This paper discusses how to accurately relate local conductivity calculations to the overall measured resistivity in magnetic multilayer systems, addressing a key challenge in interpreting experimental data.

Contribution

It provides a method to explicitly connect local conductivity calculations with the measured resistivity in magnetic multilayers.

Findings

Established a correspondence between local and measured resistivity.

Clarified the relationship between microscopic and macroscopic quantities.

Improved understanding of transport properties in magnetic multilayers.

Abstract

In heterogeneous system, the correspondence between calculated and measured quantities, such as the conductivity or the resistivity, is not obvious since the former ones are local quantities whereas the latter ones are often average values over the sample. In this report, we show explicitly how the correspondence can be done in the case of magnetic multilayers.