Szczegóły publikacji
Opis bibliograficzny
Incorporation of charge- and pair-density-wave states into the one-band model of d-wave superconductivity / Michał ZEGRODNIK, Józef Spałek // Physical Review. B ; ISSN 2469-9950. — Tytuł poprz.: Physical Review B, Condensed Matter and Materials Physics ; ISSN: 1098-0121. — 2018 — vol. 98 iss. 15, s. 155144-1–155144-8. — Bibliogr. s. 155144-8
Autorzy (2)
- AGHZegrodnik Michał
- Spałek Józef
Dane bibliometryczne
| ID BaDAP | 118335 |
|---|---|
| Data dodania do BaDAP | 2018-12-12 |
| Tekst źródłowy | URL |
| DOI | 10.1103/PhysRevB.98.155144 |
| Rok publikacji | 2018 |
| Typ publikacji | artykuł w czasopiśmie |
| Otwarty dostęp |  |
| Czasopismo/seria | Physical Review, B |
Abstract
We study the coexistence of pair- (PDW) and charge-density-wave (CDW) states within the single-band t-J-U and Hubbard models of d-wave superconductivity and discuss our results in the context of the experimental observations for the copper-based compounds. In order to take the correlation effects into account with proper precision, we use the approach based on the diagrammatic expansion of the Gutzwiller wave function (DE-GWF), which goes beyond the renormalized mean-field theory in a systematic manner. According to our analysis of the t-J-U model, the transition between the pure d-wave superconducting phase and the coexistent CDW+PDW phase takes place at delta approximate to 0.18 (close to the optimal doping), with the modulated phase located in the underdoped regime. The situation is different for the case of the Hubbard model, where a narrow stability regime of a precursor nematic phase sets in preceding the formation of the modulated CDW+PDW state, with decreasing hole doping. The results conclude our comprehensive discussion of the standard phase diagram for high-T c superconducting compounds within the DE-GWF variational approach in the single narrow-band case [see J. Spalek et al., Phys. Rev. B 95, 024506 (2017); M. Zegrodnik and Spalek, ibid. 95, 024507 (2017); 96, 054511 (2017); New J. Phys. 20, 063015 (2018)].
