Linear magnetoconductivity in magnetic metals

TL;DR

This paper presents a theoretical mechanism explaining low-field linear magnetoconductivity in helical magnetic metals, emphasizing the roles of spin-orbit coupling and momentum-dependent exchange interactions.

Contribution

It introduces minimal models demonstrating linear magnetoconductivity in 3D magnetic metals, linking theoretical predictions to experimental observations.

Findings

Identification of key ingredients: spin-orbit coupling and momentum-dependent exchange

Development of minimal models exhibiting linear magnetoconductivity

Discussion of implications for recent experimental results

Abstract

We theoretically describe a mechanism of low-field linear magnetoconductivity in helical magnetic metals. Two ingredients for the mechanism in three-dimensional metals are identified to be the spin-orbit coupling and momentum-dependent ferromagnetic exchange interaction. We propose and study a number of minimal theoretical models which have linear magnetoconductivity, and discuss their implications for recent experiments.