Transport through an interacting quantum dot coupled to two superconducting leads
Kicheon Kang
DOI 10.1103/PhysRevB.57.11891 · Physical Review B
Active bibliographic source — not scientific approval
Bibliographic access preserves source history; it does not approve extracted materials or validate reported claims. Review warnings on each occurrence separately.
Abstract
We derive a formula for the current through an interacting quantum dot coupled to two supercouducting leads, using the nonequilibrium Green’s-function formalism. It is shown that the formula takes an especially simple form, when the Andreev reflections in the junctions are negligible because of large Coulomb repulsion in the dot. Our formalism provides a framework to investigate many-body effects of mesoscopic systems in the presence of the superconducting leads. For an example, we describe the resonant tunneling of quasiparticles in the presence of strong Coulomb repulsion in the dot. Further, we discuss the boson-assisted transport. Multiple sharp peaks are found in the current-voltage curve, which originate from the singularity of the BCS density of states and the boson-assisted tunneling.
Source-reported materials — not catalogue approval
| Formula | Reported Tc (K) | Pressure (GPa) | Type |
|---|---|---|---|
| Al Archive — visibility unverified Source-occurrence policy only; no material identity or catalogue acceptance is inferred from the formula. | — | Pressure not reported | unknown |
Similar papers
Quantum phase diffusion in ac-driven superconducting atomic point contacts
similarity 0.96M. F. Carusela & J. Ankerhold
Source status unknown — claims are unverified
Circuit quantum electrodynamics with a superconducting quantum point contact
similarity 0.95G. Romero et al.
Source status unknown — claims are unverified
Superconducting nonequilibrium transport through a weakly interacting quantum dot
similarity 0.95L. Dell’Anna et al.
Source status unknown — claims are unverified
Influence of the boundary conditions on the current flow pattern along a superconducting wire
similarity 0.95Jorge Berger
Source status unknown — claims are unverified
Photon-assisted quasiparticle transport and Andreev transport through an interacting quantum dot
similarity 0.94Sam Young Cho et al.
Source status unknown — claims are unverified
Energy-transport phenomena in single superconducting grains
similarity 0.94M. Frank et al.
Source status unknown — claims are unverified