Szczegóły publikacji
Opis bibliograficzny
$d$-wave superconductivity and its coexistence with antiferromagnetism in the $t-J-U$ model: statistically consistent Gutzwiller approach / M. Abram, J. Kaczmarczyk, J. Jędrak, J. SPAŁEK // Physical Review. B, Condensed Matter and Materials Physics ; ISSN 1098-0121. — Tytuł poprz.: Physical Review B : Condensed Matter. — 2013 — vol. 88 iss. 9, s. 094502-1–094502-10. — Bibliogr. s. 094502-9–094502-10. — J. Spałek – dod. afiliacja: Marian Smoluchowski Institute of Physics
Autorzy (4)
- Abram Marcin
- Kaczmarczyk Jan
- Jędrak J.
- AGHSpałek Józef
Dane bibliometryczne
| ID BaDAP | 79407 |
|---|---|
| Data dodania do BaDAP | 2014-01-29 |
| Tekst źródłowy | URL |
| DOI | 10.1103/PhysRevB.88.094502 |
| Rok publikacji | 2013 |
| Typ publikacji | artykuł w czasopiśmie |
| Otwarty dostęp |  |
| Czasopismo/seria | Physical Review, B |
Abstract
We discuss the coexistence of antiferromagnetism and d-wave superconductivity within the so-called statistically consistent Gutzwiller approximation (SGA) applied to the t-J-U model. In this approach, the averages calculated in a self-consistent manner coincide with those determined variationally. Such consistency is not guaranteed within the standard renormalized mean-field theory. With the help of SGA, we show that for the typical value J/vertical bar t vertical bar = 1/3, coexistence of antiferromagnetism (AF) and superconductivity (SC) appears only for U/vertical bar t vertical bar > 10.6 and in a very narrow range of doping (delta less than or similar to 0.006) in the vicinity of the Mott insulating state, in contrast to some previous reports. In the coexistent AF+SC phase, a staggered spin-triplet component of the superconducting gap appears also naturally; its value is very small.
