Coulomb blockade oscillations of heat conductance in the charge Kondo regime

TL;DR

This paper develops a theoretical method to study heat transport in systems with charge Kondo effects, revealing Coulomb blockade oscillations and analyzing the Wiedemann-Franz ratio in different Kondo regimes, with relevance to recent experiments.

Contribution

It introduces a new theoretical approach to analyze heat conductance oscillations and Kondo correlations in single-electron transistors, connecting findings with recent experimental observations.

Findings

Coulomb blockade oscillations of heat conductance are characterized.

The Wiedemann-Franz ratio is analyzed in charge Kondo regimes.

Connections to recent multi-channel charge Kondo experiments are discussed.

Abstract

We develop a method of theoretically investigating the charge, energy and heat transport in the presence of the charge Kondo correlations. The Coulomb blockade oscillations of heat conductance in the single electron transistor exhibiting the charge Kondo effects are investigated. We explore the Wiedemann Franz ratio in both charge-single channel and charge-two channel Kondo regime. The close connections of our findings with the recent experiments on multi-channel charge Kondo effects are discussed.