Symmetry Theory of the Flexomagnetoelectric Effect in the Magnetic Domain Walls

TL;DR

This paper presents a symmetry-based analysis of the flexomagnetoelectric effect in magnetic domain walls of cubic crystals, revealing how magnetic symmetry influences electric polarization distribution and proposing experimental detection methods.

Contribution

It introduces a new symmetry theory for the flexomagnetoelectric effect in magnetic domain walls and links magnetic symmetry to polarization distribution.

Findings

Strong connection between magnetic symmetry and polarization distribution

Systematization of results based on domain wall chirality

Proposal for experimental detection using external electric fields

Abstract

A local flexomagnetoelectric (A.P. Pyatakov, A.K. Zvezdin, 2009) effect in the magnetic domain walls (DWs) of the cubic hexoctahedral crystal has been investigated on the basis of a symmetry analysis. The strong connection between magnetic symmetry of the DW and the type of the distribution of the electric polarization was shown. Results were systemized in the scope of the DW chirality. It was shown, that new type of the local flexomagnetoelectric coupling can be experimentally detected using the external homogeneous electric field.