Anomalous Energy Transport across Topological Insulator Superconductor Junctions

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.

5 pages, 4 figures, with updated references and discussions. Also see http://link.aps.org/doi/10.1103/PhysRevB.87.165121