Quantum Dot between two Superconductors

Abstract

Novel effects emerge from an interplay between multiple Andreev reflections and Coulomb interaction in quantum dot coupled to superconducting leads and subject to a finite potential bias $V$. Combining an intuitive physical picture with rigorous path integral formalism we evaluate the current $I$ through the dot and find that the interaction shifts the subharmonic pattern of the $I-V$ curve is shifted toward higher $V$. For sufficiently ^M strong interaction the subgap current (at $eV<2\Delta$) is virtually suppressed.

4 two column pages including 1 eps figure

References in corpus (4)

• Kinky Behavior in Josephson Junctions
• Andreev Scattering and the Kondo Effect
• Tunneling through an Anderson impurity between superconductors
• Josephson current in unconventional superconductors through an Anderson impurity

Cited by in corpus (3)

• Current-phase relations of InAs nanowire Josephson junctions: from interacting to multi-mode regimes
• Quantum Dot in the Kondo Regime coupled to p-wave superconductors
• Electron tunneling through hybrid superconducting-normal quantum point contacts under microwave radiation