Tunable magnetic interaction at the atomic scale in oxide heterostructures

TL;DR

This study explores how material composition and strain influence magnetic interactions at oxide heterostructure interfaces, demonstrating control over ferromagnetism through valence states and strain effects.

Contribution

It provides a systematic analysis of how chemical and strain variations affect interfacial magnetic properties in oxide heterostructures.

Findings

Control of interfacial ferromagnetism via valence state variation

Strain-induced tuning of magnetic orientation

Demonstration of material-specific interface property manipulation

Abstract

We report on a systematic study of a number of structurally identical but chemically distinct transition metal oxides in order to determine how the material-specific properties such as the composition and the strain affect the properties at the interface of heterostructures. Our study considers a series of structures containing two layers of ferromagnetic SrRuO3, with antiferromagnetic insulating manganites sandwiched in between. The results demonstrate how to control the strength and relative orientation of interfacial ferromagnetism in correlated electron materials by means of valence state variation and substrate-induced strain, respectively.