Giant Josephson current through a single bound state in a superconducting tunnel junction

Details Giant Josephson current through a single bound state in a superconducting tunnel junction Giant Josephson current through a single bound state in a superconducting tunnel junction

1995-10-25

arxiv.org/abs/cond-mat/9510140v1

Physics

Condensed Matter

11 pages, [aps,preprint]{revtex}

Scientific paper

10.1103/PhysRevB.53.R6006

We study the microscopic structure of the Josephson current in a single-mode tunnel junction with a wide quasiclassical tunnel barrier. In such a junction each Andreev bound state carries a current of magnitude proportional to the {\em amplitude} of the normal electron transmission through the junction. Tremendous enhancement of the bound state current is caused by the resonance coupling of superconducting bound states at both superconductor-insulator interfaces of the junction. The possibility of experimental observation of the single bound state current is discussed.

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