On the theory of magnetic field dependence of heat conductivity in dielectric in isotropic model

TL;DR

This paper analyzes how magnetic fields influence heat conductivity in dielectrics by examining phonon polarization, revealing that spin-phonon interactions induce circular polarization and a perpendicular heat flux component.

Contribution

It introduces a theoretical analysis of phonon polarization in magnetic fields within an isotropic model, highlighting the role of spin-phonon interactions in heat flux behavior.

Findings

Phonons exhibit circular polarization in magnetic fields due to spin-phonon interaction.

A heat flux component appears perpendicular to both temperature gradient and magnetic field.

The study provides a theoretical framework for magnetic field effects on heat conduction in dielectrics.

Abstract

Phonon polarization in a magnetic field is analyzed in isotropic model. It is shown, that at presence of spin-phonon interaction phonon possess circular polari-zation which causes the appearance of heat flux component perpendicular both to temperature gradient and magnetic field.