Self-Induced Quasistationary Magnetic Fields

TL;DR

This paper explores the unique resonant behaviors and mode properties of small, temporally dispersive magnetic solids interacting with electromagnetic radiation, revealing persistent magnetic currents and dynamical symmetry breaking.

Contribution

It introduces a theoretical framework for understanding quasistationary magnetic fields and mode properties in small magnetic solids, highlighting novel phenomena like persistent magnetic currents.

Findings

Existence of persistent magnetic currents in small magnetic disks.

Presence of eigen-electric moments due to mode properties.

Observation of dynamical symmetry breaking in mode fields.

Abstract

The interaction of electromagnetic radiation with temporally dispersive magnetic solids of small dimensions may show very special resonant behaviors. The internal fields of such samples are characterized by magnetostatic-potential scalar wave functions. The oscillating modes have the energy orthogonality properties and unusual pseudo-electric (gauge) fields. Because of a phase factor, that makes the states single valued, a persistent magnetic current exists. This leads to appearance of an eigen-electric moment of a small disk sample. One of the intriguing features of the mode fields is dynamical symmetry breaking.