Nuclear Magnetic Relaxation Rate in a Noncentrosymmetric Superconductor
  For a noncentrosymmetric superconductor such as CePt3Si, we consider a Cooper pairing model with a two-component order parameter composed of spin-singlet and spin-triplet pairing components.   We demonstrate that such a model on a qualitative level accounts for experimentally observed features of the temperature dependence of the nuclear spin-lattice relaxation rate 1/T1, namely a peak just below Tc and a line-node gap behavior at low temperatures. 
N. Hayashi, K. Wakabayashi, P. A. Frigeri, M. Sigrist