Dynamical systems study in single-phase multiferroic materials

TL;DR

This paper develops a dynamical systems framework to analyze electric field-induced magnetization switching in single-phase multiferroic materials, revealing conditions leading to switching failures and oscillations.

Contribution

It introduces a new theoretical approach to study coupled polarization and magnetization dynamics, highlighting the impact of relaxation rates on switching behavior.

Findings

Switching failures occur when polarization and magnetization relax slowly.

Oscillatory magnetization modes can emerge during switching.

Coupling via Dzyaloshinsky-Moriya vector influences dynamics.

Abstract

Electric field induced magnetization switching in single-phase multiferroic materials is intriguing for both fundamental studies and potential technological applications. Here we develop a framework to study the switching dynamics of coupled polarization and magnetization in such multiferroic materials. With the coupling term between the polarization and magnetization as an invariant dictated by the Dzyaloshinsky-Moriya vector, the dynamical systems study reveals switching failures and oscillatory mode of magnetization if the polarization and magnetization relax slowly during switching.