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arXiv · 0704.0204

Non-Equilibrium Josephson and Andreev Current through Interacting Quantum Dots

Marco G. Pala·Michele Governale·Jürgen König
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Abstract

We present a theory of transport through interacting quantum dots coupled to normal and superconducting leads in the limit of weak tunnel coupling. A Josephson current between two superconducting leads, carried by first-order tunnel processes, can be established by non-equilibrium proximity effect. Both Andreev and Josephson current is suppressed for bias voltages below a threshold set by the Coulomb charging energy. A $π$-transition of the supercurrent can be driven by tuning gate or bias voltages.

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Marco G. Pala, Michele Governale, Jürgen König. 2007-08-29. Non-Equilibrium Josephson and Andreev Current through Interacting Quantum Dots. https://doi.org/10.1088/1367-2630%2F9%2F8%2F278

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