Nuclear magnetic relaxation rate in a noncentrosymmetric superconductor

N. Hayashi; K. Wakabayashi; P. A. Frigeri; M. Sigrist

doi:10.1103/PhysRevB.73.092508

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Nuclear magnetic relaxation rate in a noncentrosymmetric superconductor

N. Hayashi, K. Wakabayashi, P. A. Frigeri, M. Sigrist

DOI 10.1103/PhysRevB.73.092508 · Physical Review B

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Abstract

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.

Source-reported materials — not catalogue approval

Formula	Reported Tc (K)	Pressure (GPa)	Type
CePt3Si Archive — visibility unverified Source-occurrence policy only; no material identity or catalogue acceptance is inferred from the formula.	—	Pressure not reported	unknown
LaPt3Si Archive — visibility unverified Source-occurrence policy only; no material identity or catalogue acceptance is inferred from the formula.	0.67	Pressure not reported	unknown