Quantum Nernst Effect

TL;DR

This paper predicts a quantum Nernst effect in the quantum Hall regime, showing suppressed Nernst coefficient and quantized thermal conductance, providing insights into non-equilibrium steady states in quantum systems.

Contribution

It introduces theoretical predictions of the quantum Nernst effect, highlighting its unique thermomagnetic properties in the quantum Hall regime.

Findings

Nernst coefficient is strongly suppressed when the chemical potential lies between Landau levels.

Thermal conductance is quantized in the system.

System exemplifies a physical realization of a non-equilibrium steady state.

Abstract

We report our recent predictions on the quantum Nernst effect, a novel thermomagnetic effect in the quantum Hall regime. We assume that, when the chemical potential is located between a pair of neighboring Landau levels, edge currents convect around the system. This yields theoretical predictions that the Nernst coefficient is strongly suppressed and the thermal conductance is quantized. The present system is a physical realization of the non-equilibrium steady state.