Transport through an Interacting Quantum Dot Coupled to Two Superconducting Leads

Content Provider	Semantic Scholar
Author	Kang, Kicheon
Copyright Year	1998
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.
Starting Page	11891
Ending Page	11894
Page Count	4
File Format	PDF HTM / HTML
DOI	10.1103/PhysRevB.57.11891
Volume Number	57
Alternate Webpage(s)	https://arxiv.org/pdf/cond-mat/9802008v1.pdf
Alternate Webpage(s)	https://doi.org/10.1103/PhysRevB.57.11891
Language	English
Access Restriction	Open
Content Type	Text
Resource Type	Article