Microscopic mechanisms of spin-dependent electric polarization in 3d oxides

TL;DR

This paper reviews various microscopic models explaining spin-dependent electric polarization in 3d oxides, including nonrelativistic, relativistic, and ab-initio approaches, highlighting their mechanisms and differences.

Contribution

It provides a critical overview of existing microscopic models for spin-dependent electric polarization in 3d oxides, comparing their assumptions and predictions.

Findings

Different models explain spin-dependent polarization mechanisms.

Relativistic and nonrelativistic approaches are contrasted.

Ab-initio calculations offer detailed insights into microscopic interactions.

Abstract

We present a short critical overview of different microscopic models for nonrelativistic and relativistic magnetoelectric coupling including the so-called "spin current scenario", ab-initio calculations, and several recent microscopic approaches to a spin-dependent electric polarization in 3d oxides.