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Circuit theory of unconventional superconductor junctions

Y. Tanaka·Yu. V. Nazarov·S. Kashiwaya
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Abstract

We extend the circuit theory of superconductivity to cover transport and proximity effect in mesoscopic systems that contain unconventional superconductor junctions. The approach fully accounts for zero-energy Andreev bound states forming at the surface of unconventional superconductors. As a simple application, we investigate the transport properties of a diffusive normal metal in series with a d-wave superconductor junction. We reveal the competition between the formation of Andreev bound states and proximity effect, that depends on the crystal orientation of the junction interface.

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Y. Tanaka, Yu. V. Nazarov, S. Kashiwaya. 2002-08-01. Circuit theory of unconventional superconductor junctions. https://doi.org/10.1103/physrevlett.90.167003

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