Spin-dependent electron transport through a ferromagnetic domain wall

TL;DR

This paper provides a theoretical analysis of how electron spin transport is affected by ferromagnetic domain walls, revealing effects like conductance variance reduction and negative magnetoresistance with increasing magnetization.

Contribution

It introduces a model that explores the impact of exchange coupling components on conductance variance and magnetoresistance in ferromagnetic domain walls.

Findings

Conductance variance halves with more exchange coupling components.

Negative magnetoresistance increases with domain wall magnetization.

Theoretical predictions align with potential experimental observations.

Abstract

We present a theoretical study of spin-dependent transport through a ferromagnetic domain wall. With an increase of the number of components of the exchange coupling, we have observed that the variance of the conductance becomes half. As the strength of the domain wall magnetization is increased, negative magnetoresistance is also observed.