Amplification of Fluctuations in Superconductors aboveTc

Abstract
We calculate the contribution of fluctuating Cooper pairs to the electronic spin susceptibility of a superconductor for temperatures larger than the transition temperature Tc. If paramagnetic impurities are added to the sample, this results in fluctuations in the impurity spin susceptibility. It is shown that through this mechanism, fluctuations in the electronic spin susceptibility are amplified to such an extent that in the dirty limit they should become the dominant correction to the total susceptibility.