Effects of magnetic impurities on two-band superconductor

Details Effects of magnetic impurities on two-band superconductor Effects of magnetic impurities on two-band superconductor

2007-03-08

arxiv.org/abs/cond-mat/0703201v1

Physics

Condensed Matter

Superconductivity

4 pages, 5 figures, paper presented to STRIPES06, december 2006, Rome

Scientific paper

I calculated the effect of magnetic impurities on the normal and superconductive properties of a multiband s-wave superconductor by direct solution of the two-band Eliashberg equations. In this way I determined the critical temperature, the values of the superconductive gaps, the shape of the superconductive density of states and other physical quantities that depend on the concentration of magnetic impurities. I found that the gaps and the penetration lengths display an unusual behaviour as a function of temperature. I examine the possibility that the presence of a negative induced gap raises the critical temperature.

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