Josephson current through a correlated quantum level: Andreev states and π junction behavior
By E. Vecino, Á. Martín-Rodero, A. Levy Yeyati. 2002
151 citations recorded by the source corpus.
The Josephson transport and the electronic properties of a quantum dot characterized by a single level coupled to superconducting leads is analyzed. Different approximations are used and compared: the mean-field approximation, the second-order perturbation theory in the Coulomb interaction, and the exact diagonalization in the zero bandwidth limit. The system exhibits a rich behavior as a function of the relevant parameters. We discuss in detail the conditions for the observation of π junction behavior and the effect of Coulomb interactions on the Andreev states.
Subfields: Atomic and Molecular Physics, and Optics, Condensed Matter Physics
View Paper: https://www.semanticscholar.org/paper/7b3c883d882dfbd914eb4c15eb89b16cf7999e24
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In Atomic and Molecular Physics, and Optics
In Condensed Matter Physics
Citations in the corpus
- Josephson and Andreev transport through quantum dots (2011, methodology): “(Vecino et al., 2003) (A similar model was analyzed in Ref.”
- Andreev bound states in supercurrent-carrying carbon nanotubes revealed (2010, unknown): “e splitting U˜, the mean position E of the SSPL relative to the Fermi level (which is controlled by the gate voltage Vg), and the coupling to the leads (see Fig. S1a in SI). Previous theoretical work [24, 25] has shown that there can be up to four ABS, symmetric (in position, but not in intensity) a”