Journal
PHYSICAL REVIEW B
Volume 67, Issue 4, Pages -Publisher
AMER PHYSICAL SOC
DOI: 10.1103/PhysRevB.67.041301
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Electron transport between two superconductors through an Anderson impurity in the Kondo regime is investigated within the slave boson mean-field approximation. The current, shot-noise power and Fano factor are displayed versus the applied bias voltage in the subgap region and found to be strongly dependent on the ratio between the Kondo temperature T-K and the superconducting gap Delta. In particular, the I-V curve exposes an excess current in the limit T-K/Delta>>1.
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