Nuclear Magnetic Resonance in Low-Symmetry Superconductors

Abstract

We consider the nuclear spin-lattice relaxation rate, $1/T_{1}T$ in superconductors with accidental nodes. We show that a Hebel-Slichter-like peak occurs even in the absence of an isotropic component of the superconducting gap. The logarithmic divergence found in clean, non-interacting models is controlled by both disorder and electron-electron interactions. However, for reasonable parameters, neither of these effects removes the peak altogether.

10 pages, 5 figures

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