Transport through a single Anderson impurity coupled to one normal and two superconducting leads

Details Transport through a single Anderson impurity coupled to one normal and two superconducting leads Transport through a single Anderson impurity coupled to one normal and two superconducting leads

2011-12-28

arxiv.org/abs/1112.6053v1

Physics

Condensed Matter

Mesoscale and Nanoscale Physics

4 pages, 4 figures, contribution to SCES 2011

Scientific paper

We study the interplay between the Kondo and Andreev-Josephson effects in a quantum dot coupled to one normal and two superconducting (SC) leads. In the large gap limit, the low-energy states of this system can be described exactly by a local Fermi liquid for the interacting Bogoliubov particles. The phase shift and the renormalized parameters for the Bogoliubov particles vary depending on the Josephson phase between the two SC leads. We explore the precise features of a crossover that occurs between the Kondo singlet and local Cooper-pairing states as the Josephson phase varies, using the numerical renormalization group approach.

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