Dressed behavior of the quasiparticles lifetime in the unitary limit of two unconventional superconductors

Abstract

We compare the quasiparticle lifetime behavior in the unitary limit of two unconventional superconductors dressed by non-magnetic impurity scattering to differentiate an anomalous functional behavior in its shape when the disorder concentration is changed in a triplet paired model with respect to the well behave singlet model. For singlet paired superconductors, the functional shape of the lifetime due to elastic scattering around the nodal regions does not change with the change of the disorder concentration, but for a triplet model with a tiny gap, an anomalous drop in shape is observed only when small values of disordering are added. We use a 2D tight-binding parametrization to study the reduced phase space of the first Brillouin zone, where the low energy scattering is restricted to the nodal/quasinodal regions for two irreducible representations of the crystal lattice.

arXiv comment12 pages, 3 figures, 33 references, 3 misspellings typos corrected

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Cited by in corpus (3)

• Tight-Binding Superconducting Phases in the Unconventional Compounds Strontium-Substituted Lanthanum Cuprate and Strontium Ruthenate
• Quasi-point versus point nodes in $S{r}_{2}Ru{O}_4$, the case of a flat tight binding $\gamma$ sheet
• Self-Consistent Study of the Superconducting Gap in the Strontium-doped Lanthanum Cuprate