Quasi-point versus point nodes in $S{r}_{2}Ru{O}_4$, the case of a flat tight binding $\gamma$ sheet

Abstract

We perform a numerical study of the unitary regime as a function of disorder concentration in the imaginary part of the elastic scattering cross-section for the compound $S{r}_{2}Ru{O}_4$ in the flat band non-disperse limit. By using a self-consistent tight-binding (TB) method, we find a couple of families of Wigner probabilistic functions that help to explain macroscopically the distribution between Fermion dressed quasiparticles and Cooper pairs, and also the position of nodes in the order parameter for $S{r}_{2}Ru{O}_4$. Therefore, we are able to show that a TB model for the $\gamma$ sheet numerically shows 4 point nodes in a flat $\gamma$ sheet limit or 4 quasi-point nodes for strong dispersion $\gamma$ sheet limit in the reduced phase scattering space (RPS).

19 pages, 4 figures, 44 references

References in corpus (5)

• Scattering due to non-magnetic disorder in 2D anisotropic d-wave high Tc superconductors
• A numerical calculation of the electronic specific heat for the compound Sr${}_2$RuO${}_4$ below its superconducting transition temperature
• Electronic heat transport for a multiband superconducting gap in Sr${}_2$RuO${}_4$
• Symmetry Field Breaking Effects in Sr${}_2$RuO${}_4$
• Dressed behavior of the quasiparticles lifetime in the unitary limit of two unconventional superconductors

Cited by in corpus (1)

• Self-Consistent Study of the Superconducting Gap in the Strontium-doped Lanthanum Cuprate