Abstract
Maximum supercurrent I c passing through S(Nb)N(Cu doped with Mn)s(Nb) proximity system has been measured down to 30 mK, in order to investigate the relation between the superconducting proximity effect and the Kondo effect. It is found that I c can be measured below 0.4 K within our experimental accuracy. The temperature dependence of I c may be explained by the spin flip scattering of the conduction electrons by Mn impurities and the RKKY interaction between Mn impurities.
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