Current-Induced Heat Transfer in Double-Layer Graphene

TL;DR

This paper reveals that electric current can induce heat transfer in double-layer graphene, with heat flux depending on current and voltage bias, offering new insights for thermal management in 2D materials.

Contribution

It introduces the concept of current-induced heat transfer in double-layer graphene using advanced theoretical methods, highlighting its potential for thermal control in 2D systems.

Findings

Heat flux depends quadratically on current.

External voltage bias can reverse heat flow direction.

Current-induced heat transfer exists in both macroscopic and nanosized graphene.

Abstract

Using the fluctuational electrodynamics and nonequilibrium Green's function methods, we demonstrate the existence of a current-induced heat transfer in double-layer graphene even when the temperatures of the two sheets are the same. The heat flux is quadratically dependent on the current. When temperatures are different, external voltage bias can reverse the direction of heat flow. The drift effect can exist in both macroscopic and nanosized double-layer graphene and extend to any other 2D electron systems. These results pave the way for a different approach to the thermal management through radiation in nonequilibrium systems.