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Impact of the transport supercurrent on the Josephson effect

S. N. Shevchenko
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Abstract

We study the weak link between current-carrying superconductors, both conventional and d-wave. The state of the system is controlled by two parameters: the order parameter phase difference $ϕ$ and the superfluid velocity $v_{s}$, which parameterizes the parallel to the boundary transport supercurrent which is injected externally. The low-temperature current-phase relations are derived. We consider two models of weak links: a constriction between two conventional superconductors and a plane boundary between two differently orientated d-wave superconductors. We show that for some relation between $ϕ$ and $v_{s}$ quasiparticles create the current along the boundary which flows in the direction opposite to the transport supercurrent.

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S. N. Shevchenko. 2004-04-30. Impact of the transport supercurrent on the Josephson effect. https://doi.org/10.1142/9789812701619_0017

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