Thermal currents in highly correlated systems

TL;DR

This paper derives the interaction-induced thermal current contribution in highly correlated systems, revealing significant corrections to thermal conductivity in anisotropic superconductors, which impacts their interpretation.

Contribution

It introduces a new derivation of the interaction contribution to thermal current, highlighting its importance in anisotropic superconductors.

Findings

Interaction contributions significantly affect thermal conductivity calculations.

Corrections are particularly relevant for anisotropic superconductors.

Implications for interpreting experimental thermal conductivity data.

Abstract

Conventional approaches to thermal conductivity in itinerant systems neglect the contribution to thermal current due to interactions. We derive this contribution to the thermal current and show how it produces important corrections to the thermal conductivity in anisotropic superconductors. We discuss the possible relevance of these corrections for the interpretation of the thermal conductivity of anisotropic superconductors.