Thermal drag effect in quantum Hall circuits

TL;DR

This paper investigates the thermal drag phenomenon in coupled quantum Hall circuits, analyzing heat transfer, noise, and electron interactions using non-equilibrium bosonization techniques.

Contribution

It introduces a detailed theoretical analysis of thermal drag effects in quantum Hall circuits considering strong capacitive coupling and non-equilibrium conditions.

Findings

Thermal drag current depends on capacitive coupling strength.

Noise power and Fano factor are significantly affected by electron interactions.

Non-equilibrium bosonization effectively models heat transfer in quantum Hall systems.

Abstract

We study the thermal drag between two mesoscopic quantum Hall (QH) circuits. Each circuit consists of Ohmic contact perfectly coupled to quantum Hall edge states. The drag is caused by strong capacitive coupling between Ohmic contacts. The non-equilibirum conditions and the electron-electron interaction are taken into account by using the non-equilibrium bosonization technique. The thermal drag current in the passive circuit, the noise power of the corresponding heat current, and the Fano factor are calculated and analyzed.