Spectral properties of interacting magnetoelectric particles

TL;DR

This paper investigates the spectral characteristics of coupled magnetoelectric disks, revealing an exchange interaction mechanism distinct from traditional magnetic dipole interactions, advancing the understanding of ME 'molecules' and composites.

Contribution

It introduces a spectral method to analyze coupled ME particles, highlighting a novel exchange interaction mechanism and providing a foundation for future ME composite development.

Findings

Existence of an exchange interaction mechanism between ME disks.

Spectral analysis distinguishes this exchange interaction from magnetostatic dipole interactions.

Potential for developing a theory of ME 'molecules' and local ME composites.

Abstract

The linear magnetoelectric (ME) effect provides a special route for linking magnetic and electric properties. In microwaves, a local ME effect appears due to the dynamical symmetry breakings of magnetic-dipolar modes (MDMs) in a ferrite disk particle. The fact that for MDMs in a ferrite disk one has evident both classical and quantum-like attributes, puts special demands on the methods used for study of interacting ME particles. A proper model for coupled particles should be based on the spectral characteristics of MDM oscillations and an analysis of the overlap integrals for interacting eigen oscillating ME elements. In this paper, we present theoretical studies of spectral properties of literally coupled of MDM ME disks. We show that there exists the "exchange" mechanism of interaction between the particles, which is distinctive from the magnetostatic interaction between magnetic dipoles. The spectral method proposed in this paper may further the development of a theory of ME "molecules" and realization of local ME composites.