Anomalous Energy Transport across Topological Insulator Superconductor Junctions

TL;DR

This paper investigates unique energy transport phenomena at topological insulator/superconductor interfaces, revealing anomalous thermal behaviors with potential applications in energy management of hybrid systems.

Contribution

It introduces a novel scattering wave approach to derive interfacial heat current and uncovers new anomalous thermal effects in topological insulator/superconductor junctions.

Findings

Thermal energy exhibits Klein tunneling.

Asymmetric Kapitza resistance observed.

Negative differential thermal resistance identified.

Abstract

We study the nonequilibrium energy transport across a topological insulator/superconductor junction, by deriving an interfacial heat current formula through scattering wave approach. Several anomalous thermal properties are uncovered, such as thermal energy's Klein tunneling, asymmetric Kapitza resistance and negative differential thermal resistance. We expect these findings could have potential applications for the energy control in various hybridized mesoscopic systems.