Abstract
Abstract The Meissner effect in Cu doped with Mn, Fe, Co and Ni which is induced by the proximity effect of Nb is measured. The thickness ϱ of the Meissner region in Cu is found to be a linear function of T −1 2 except for Mn-impurity sample. The ϱ of Mn-impurity sample is suppressed by the magnetic scattering around T K and recovered with decreasing temperature below T K . This result indicates that the pair breaking probability due to Mn impurities rapidly decreases below T K . The dc magnetic field dependence of ϱ shows anomalous behavior around T K .
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