Elementary theory of Magnetoferrons: bringing magnons and ferrons together in multiferroic systems

TL;DR

This paper introduces the concept of magnetoferrons, hybrid excitations in multiferroic materials that combine magnon and ferron behaviors, with a framework for understanding their dynamics and potential applications.

Contribution

It presents the elementary theory of magnetoferrons, demonstrating their properties and significance in multiferroic systems, bridging magnons and ferrons in a unified framework.

Findings

Magnetoferrons exhibit hybrid magnetoelectric behavior.

They demonstrate unique properties distinct from pure magnons or ferrons.

The framework aids in describing multiferroic dynamics.

Abstract

The collective excitations of a multiferroic material are analyzed. We show that these excitations also exhibit magnetoelectric behavior, leading to the hybridization of magnons ,oscillations of the magnetization field, and ferrons, which are oscillations of the electric dipolar density field. We term these emergent entities 'magnetoferrons', study their main properties, and discuss their potential applications. Additionally, we provide a phenomenological framework for these systems, which will be invaluable for describing the dynamics of the multiferromagnetic state.