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arXiv · 1808.04606

Phase-coherent heat circulator based on multi-terminal Josephson junctions

Sun-Yong Hwang·Francesco Giazotto·Björn Sothmann
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Abstract

We theoretically propose a phase-coherent thermal circulator based on ballistic multiterminal Josephson junctions. The breaking of time-reversal symmetry by either a magnetic flux or a superconducting phase bias allows heat to flow preferentially in one direction from one terminal to the next while heat flow in the opposite direction is suppressed. We find that our device can achieve a high circulation efficiency over a wide range of parameters and that its performance is robust with respect to the presence of disorder. We provide estimates for the expected heat currents for realistic samples.

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Sun-Yong Hwang, Francesco Giazotto, Björn Sothmann. 2018-08-14. Phase-coherent heat circulator based on multi-terminal Josephson junctions. https://doi.org/10.1103/physrevapplied.10.044062

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