1. Quasi-point versus point nodes in Sr2RuO4, the case of a flat tight binding γ sheet
- Author
-
Pedro L. Contreras E., D. Osorio, S. Tsuchiya, Universidad de Los Andes [Venezuela] (ULA), University of Pavia, Department of Physics, Chuo University, and Chuo University (Chuo University)
- Subjects
Wigner distribution probabilities ,FOS: Physical sciences ,General Physics and Astronomy ,non-magnetic disorder ,Computational material design PACS numbers: 34.80.Bm ,Education ,Superconductivity (cond-mat.supr-con) ,Point nodes ,Triplet reversal time broken state ,γ sheet ,Elastic scattering crosssection ,Quasi-point nodes ,[PHYS]Physics [physics] ,Flat bands ,Condensed Matter - Superconductivity ,Disordered Systems and Neural Networks (cond-mat.dis-nn) ,Computational Physics (physics.comp-ph) ,Condensed Matter - Disordered Systems and Neural Networks ,74.62.Dh ,72.10.-d ,Tiny gap ,74.70.-b ,Sr2RuO4 ,72.80.Ng ,Physics - Computational Physics ,Unconventional superconductivity ,74.20.-z ,74.70.Dd - 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 $Sr_2RuO_4$ 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 $Sr_2RuO_4$. 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)., Comment: 19 pages, 4 figures, 44 references
- Published
- 2021