Nuclear magnetic relaxation rate in a noncentrosymmetric superconductor
PhysRevB_73_092508.pdf 85.7 KB
Frigeri, Paolo A.
Noncentrosymmetric superconductors possess, in general, order parameters of mixed parity, i.e., the Cooper pairing state consists of spin-singlet and spin-triplet pairing components. We show that this property has important implications for the NMR and other measurable quantities in the heavy Fermion superconductor CePt3Si. The aspect of parity mixing explains the apparently contradicting observations of a Hebel-Slichter peak in the nuclear spin-lattice relaxation rate T1 -1 and the presence of power law in the low-temperature behavior of certain physical quantities, indicating line nodes in the quasiparticle gap.
Physical Review B - Condensed Matter and Materials Physics
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American Physical Society
Copyright (c) 2006 American Physical Society.
Graduate School of Advanced Sciences of Matter