Leduc-Righi effect in superconductors with nontrivial density of states

TL;DR

This paper investigates how the electronic thermal conductivity in superconductors with nontrivial density of states increases under magnetic fields, distinguishing between different scattering mechanisms affecting thermal transport.

Contribution

It introduces a model analyzing the enhancement of thermal conductivity in superconductors with complex density of states, separating symmetric and asymmetric scattering effects.

Findings

Thermal conductivity K(T) increases in superconductors with nontrivial density of states under magnetic fields.

A mechanism for increasing K(T) is identified when symmetric quasiparticle scattering is less than the cyclotron energy.

The study distinguishes between effects due to symmetric and asymmetric electronic scattering.

Abstract

Increasing of electronic thermal conductivity of superconductor in the model with nontrivial density of states was considered. The electronic thermal conductivity K(T) of SC in the presence of external magnetic field was investigated. It was shown that if symmetrical part of quasiparticle scattering rate less than cyclotron energy observed mechanism of increasing K(T) can be separated from connected with asymmetric electronic scattering effects another one.