The proximity effect in normal metal - multiband superconductor hybrid structures

Details The proximity effect in normal metal - multiband superconductor hybrid structures The proximity effect in normal metal - multiband superconductor hybrid structures

2004-01-28

arxiv.org/abs/cond-mat/0401581v1

Physics

Condensed Matter

Superconductivity

Scientific paper

10.1103/PhysRevB.69.214407

A theory of the proximity effect in normal metal - multiband superconductor hybrid structures is formulated within the quasiclassical Green's function formalism. It is shown that the existence of multiple superconducting bands manifests itself as the occurence of additional peaks in the density of states in the structure. The interplay between the proximity effect and the interband coupling influences the magnitudes of the gaps in a superconductor in a non-trivial way. The developed theory is applied to the calculation of supercurrent in multiband Superconductor - Normal metal - Superconductor Josephson junctions with low-transparent interfaces, and the results are compared with the predictions for multiband tunnel junctions.

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