Radiative Corbino effect in nonreciprocal many-body systems

TL;DR

This paper introduces a thermal analog of the Corbino effect in nonreciprocal many-body systems, demonstrating how an external magnetic field induces a tangential heat flux in systems with a radial temperature gradient, with potential nanoscale applications.

Contribution

It presents the first demonstration of a thermomagnetic Corbino effect in many-body photon-exchanging systems out of thermal equilibrium.

Findings

Magnetic field bends the Poynting flux in the Corbino geometry.

Radial temperature gradients induce tangential heat flux under magnetic fields.

Potential applications in nanoscale thermal management and energy conversion.

Abstract

When a magnetic field is applied in the perpendicular direction to a metallic disk under the action of a radial bias voltage, a tangential electric current superimposes to the radial current due to the presence of the Lorentz force which acts on electrons. Here we introduce a thermal analog of this Corbino effect in many-body systems made of nonreciprocal bodies which interact by exchanging photons in near-field regime. In systems out of thermal equilibrium with a radial temperature gradient, we demonstrate that the Poynting field in the Corbino geometry is bent in presence of an external magnetic field, giving rise to a tangential heat flux. This thermomagnetic effect could find applications in the field of thermal management and energy conversion at nanoscale.