Magnetoanisotropic thermal transport in a topological Josephson junction

The thermal transport in Joesphson junctions, particularly, based on topological insulators (TIs), has not been extensively studied so far. Herein, we theoretically investigate the magnetoanisotropic thermal transport in a TI-based Josephson hybrid structure with a ferromagnetic insulator sandwiched between two superconductors (SCs). It is shown that the thermal conductance and current both are considerably sensitive to the orientation and magnitude of the exchange field. In particular, the negative differential thermal conductance is exhibited, which is modulated by the exchange field. More interestingly, zero-energy Andreev bound states are confirmed with the help of the thermal conductance, which in turn demonstrates itself to be of significance in the thermal transport. It is expected that these findings could have potential applications for the energy control in various hybridized mesoscopic systems. (c) 2021 Elsevier Inc. All rights reserved.

Automated summary

This theoretical study investigates the magnetoanisotropic thermal transport in a TI-based Josephson hybrid structure, revealing the sensitivity of thermal conductance and current to the orientation and magnitude of the exchange field. It demonstrates the existence of negative differential thermal conductance and zero-energy Andreev bound states, which could have potential applications for energy control in various hybridized mesoscopic systems.