NMR relaxation time in a clean two-band superconductor

K. V. Samokhin, B. Mitrović
2005 Physical Review B  
We study the spin-lattice relaxation rate of nuclear magnetic resonance in a two-band superconductor. Both conventional and unconventional pairing symmetries for an arbitrary band structure in the clean limit are considered. The importance of the inter-band interference effects is emphasized. The calculations in the conventional case with two isotropic gaps are performed using a two-band generalization of Eliashberg theory.
doi:10.1103/physrevb.72.134511 fatcat:xmiiasuhozbrtjkql2wpevx6qm