Effects of Superconducting Fluctuations on NMR Relaxation Rate

Abstract

Effects of superconducting fluctuations on the relaxation rate of NMR are evaluated in the dirty limit for the s-wave and d-wave states. In the s-wave state, there is a divergent contribution from the Maki process, but its magnitude is sensitive to the degree of three-dimensionality, whereas the contribution of the same process is vanishingly small in the d-wave state.