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.

arXiv comment5 pages, 4 figures, with updated references and discussions. Also see http://link.aps.org/doi/10.1103/PhysRevB.87.165121

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• Electronic heat current rectification in hybrid superconducting devices
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• Low temperature thermal transport at the interface of a topological insulator and a d-wave superconductor