A Model of Correlated Fermions with $d_{x^2-y^2}$ Superconductivity
| dc.creator | Nazarenko, Alexander | |
| dc.creator | Moreo, Adriana | |
| dc.creator | Riera, Jose | |
| dc.creator | Dagotto, Elbio | |
| dc.date | 1995-09-25 | |
| dc.date | 1995-09-27 | |
| dc.date.accessioned | 2026-07-07T08:58:58Z | |
| dc.date.available | 2026-07-07T08:58:58Z | |
| dc.description | Motivated by the phenomenology of the high-Tc cuprates, a two dimensional fermionic model with attractive interactions is here discussed. The exact solution to the two particle problem leads to a bound state in the $d_{x^2 - y^2}$ subspace. Numerical techniques suggest that the model has $d_{x^2 - y^2}$ superconductivity (SC) in the ground state at low fermionic density. Within a self-consistent RPA diagrammatic study, the density dependence of the critical temperature is calculated. We argue that in the context of d-wave SC this model fulfills the role that the attractive on-site Hubbard model has played for s-wave SC. We also show that another candidate, the attractive ``t-U-V'' model, which has d-wave SC at the mean-field level is actually not useful as a realization of this family of condensates for a variety of reasons. | |
| dc.description | 4 pages, RevTeX (version 3.0), uuencoded figures with psfig.tex | |
| dc.identifier | https://arxiv.org/abs/cond-mat/9509155 | |
| dc.identifier | http://arxiv.org/abs/cond-mat/9509155 | |
| dc.identifier.uri | http://salesiana.dossiersoluciones.com/handle/123456789/147533 | |
| dc.subject | Condensed Matter | |
| dc.title | A Model of Correlated Fermions with $d_{x^2-y^2}$ Superconductivity | |
| dc.type | text |