Andreev tunnelling in quantum dots: A slave-boson approach

Details Andreev tunnelling in quantum dots: A slave-boson approach Andreev tunnelling in quantum dots: A slave-boson approach

1998-06-05

arxiv.org/abs/cond-mat/9806075v1

Phys. Rev. B59 1637-1640 (1999)

Physics

Condensed Matter

Mesoscale and Nanoscale Physics

4 pages, 1 figure

Scientific paper

10.1103/PhysRevB.59.1637

We study a strongly interacting quantum dot connected to a normal and to a superconducting lead. By means of the slave-boson technique we investigate the low temperature regime and discuss electrical transport through the dot. We find that the zero bias anomaly in the current-voltage characteristics which is associated to the occurance of the Kondo resonance in the quantum dot, is enhanced in the presence of superconductivity, due to resonant Andreev scattering.

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