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.Comment: 4 pages, 5 figures, paper presented to STRIPES06, december 2006, Rom
