Magneto-thermoplasmonics: from theory to applications

TL;DR

This paper reviews recent theoretical advances in nanoscale magneto-thermoplasmonics, focusing on radiative heat transfer phenomena influenced by magnetic fields and their potential applications in sensing technologies.

Contribution

It provides a comprehensive theoretical analysis of heat transfer effects in magneto-optical systems, highlighting new phenomena like the thermal Hall effect and heat flux directionality.

Findings

Analysis of circular heat flux and giant magneto-resistance effects.

Identification of the thermal Hall effect in magneto-optical systems.

Insights into magnetic-field-dependent dipolar resonances.

Abstract

We review recent theoretical developments on the nanoscale radiative heat transfer in magneto-optical many-particle systems. We discuss in detail the circular heat flux, the giant magneto-resistance effect, the persistent heat current, and the thermal Hall effect for light in such systems within the framework of fluctuational electrodynamics, using the dipolar approximation. We show that the directionality of heat flux in such systems can in principle be understood by analyzing the competing contributions to the heat exchange of the magnetic-field-dependent dipolar resonances of quantum numbers m = +1 and m = -1. Some potential applications of these effects to thermal and magnetic sensing are also briefly discussed.