Nuclear Spin Relaxation Rate of Disordered $p_x+i{p}_y$-wave Superconductors

Abstract

Based on an effective Hamiltonian with the binary alloy disorder model defined in the triangular lattice, the impurity scattering effects on the density of states and especially on the spin-lattice relaxation rate $1/T_1$ of $p_x+i{p}_y$-wave superconductors are studied by solving numerically the Bogoliubov-de Gennes equations. In the clean limit, the coherence peak of $1/T_1$ is observed as expected. More intriguingly, for strong scattering potential, the temperature dependence of $1/T_1$ exhibits the two different power law behaviors near $T_{\text{c}}$ and at low temperatures, respectively, which is in good agreement with the nuclear quadrupolar resonance measurement.

arXiv comment4 pages, 3 figures

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Cited by in corpus (3)

• Pressure dependence of the superconducting transition and electron correlations in Na_xCoO_2 \cdot 1.3H_2O
• Identifying the pairing symmetry in sodium cobalt oxide by Andreev edge states
• Absence of spin susceptibility decrease in a bulk organic superconductor with triangular lattice