Disappearance of ensemble-averaged Josephson current in dirty superconductor-normal-superconductor junctions of d-wave superconductors
Yasuhiro Asano
DOI 10.1103/PhysRevB.64.014511 · Physical Review B
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Abstract
We discuss the Josephson current in superconductor/dirty normal conductor/superconductor junctions, where the superconductors have dx2−y2 pairing symmetry. The low-temperature behavior of the Josephson current depends on the orientation angle between the crystalline axis and the normal of the junction interface. We show that the ensemble-averaged Josephson current vanishes when the orientation angle is π/4 and the normal conductor is in the diffusive transport regime. The dx2−y2-wave pairing symmetry is responsible for this fact.
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