Superconducting non-equilibrium transport through a weakly interacting quantum dot

Abstract

We study the out-of-equilibrium current through an interacting quantum dot modelled as an Anderson impurity contacted by two BCS superconductors held at fixed voltage bias. In order to account for multiple Andreev reflections, we develop a Keldysh Green's function scheme perturbative in the dot's interaction strength. We find an unexpected enhancement of the current due to repulsive interactions for small lead-to-dot couplings.

6 pages, 6 figures, replaced with published version

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Cited by in corpus (25)

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• Iterative real-time path integral approach to nonequilibrium quantum transport
• Self-consistent description of Andreev bound states in Josephson quantum dot devices
• Interplay of Kondo and superconducting correlations in the nonequilibrium Andreev transport through a quantum dot
• Controlling Quantum Transport via Dissipation Engineering
• Nonequilibrium transport through a spinful quantum dot with superconducting leads
• Electrical control of Kondo effect and superconducting transport in a side-gated InAs quantum dot Josephson junction
• Non-equilibrium supercurrent through a quantum dot: current harmonics and proximity effect due to a normal metal lead
• Iterative path integral summation for nonequilibrium quantum transport
• Renormalization effects in interacting quantum dots coupled to superconducting leads
• Magneto-electric spectroscopy of Andreev bound states in Josephson quantum dots
• Non-equilibrium transport through a Josephson quantum dot
• Odd-triplet superconductivity in single-level quantum dots
• Driven Andreev molecule
• Fermi liquid approach for superconducting Kondo problems
• Hamiltonian approach to the charge transfer statistics of Kondo quantum dots contacted by a normal metal and a superconductor
• Driven superconducting proximity effect in interacting quantum dots
• Transient dynamics of a magnetic impurity coupled to superconducting electrodes: exact numerics versus perturbation theory
• AC Josephson transport through interacting quantum dots
• Markovian kinetic equation approach to electron transport through quantum dot coupled to superconducting leads
• Real-time effective-action approach to the Anderson quantum dot
• Collapse of the Josephson emission in a carbon nanotube junction in the Kondo regime
• Keldysh field theory approach to direct electric and thermoelectric currents in quantum dots coupled to superconducting leads
• Quantum phase transitions in superconductor--quantum-dot--superconductor Josephson structures with attractive intradot interaction
• Coulomb-enhanced resonance transmission of quantum SINIS junctions