Szczegóły publikacji
Opis bibliograficzny
Superconducting properties of the hole-doped three-band $d−p$ model studied with minimal-size real-space $d$-wave pairing operators / A. BIBORSKI, M. ZEGRODNIK, J. Spałek // Physical Review. B ; ISSN 2469-9950. — Tytuł poprz.: Physical Review B, Condensed Matter and Materials Physics ; ISSN: 1098-0121. — 2020 — vol. 101 iss. 21 art. no. 214504, s. 214504-1-214504-9. — Bibliogr. s. 214504-9. — Publikacja dostępna online od: 2020-06-04
Autorzy (3)
- AGHBiborski Andrzej
- AGHZegrodnik Michał
- Spałek Józef
Dane bibliometryczne
| ID BaDAP | 129068 |
|---|---|
| Data dodania do BaDAP | 2020-06-24 |
| Tekst źródłowy | URL |
| DOI | 10.1103/PhysRevB.101.214504 |
| Rok publikacji | 2020 |
| Typ publikacji | artykuł w czasopiśmie |
| Otwarty dostęp |  |
| Czasopismo/seria | Physical Review, B |
Abstract
The three-band d-p model is investigated by means of a variational Monte Carlo (VMC) method with the BCS-like wave-function supplemented by the Gutzwiller and Jastrow correlators. The VMC optimization leads to a d-wave superconducting state with a characteristic domelike shape of the order parameter for hole doping delta less than or similar to 0.4, in good agreement with the experimental observations. Also, the off-diagonal pair-pair correlation functions, calculated within VMC, vindicates the results obtained very recently within the diagrammatic expansion of the Gutzwiller wave function method [cf. Zegrodnik, Biborski, Fidrysiak, and Spalek, Phys. Rev. B 99, 104511 (2019)]. Subsequently, the nature of the d-wave pairing is investigated by means of recently proposed minimal-size real-space d-wave pairing operators [Moreo and Dagotto, Phys. Rev. B 100. 214502 (2019)]. An emergence of the long-range superconducting ordering for both d and p orbitals is reported by analyzing the corresponding off-diagonal pair-pair correlation functions. The dominant character of d-wave pairing on d orbitals is confirmed. Additionally, the trial wave function is used to investigate the magnetic properties of the system. The analysis of spin-spin correlation functions is carried out and shows antiferromagnetic q = (pi, pi), short-range order, as expected. For the sake of completeness, the charge gap has been estimated, which for the parent compound takes the value Delta(CG) approximate to 1.78 +/- 0.51 eV, and agrees with values reported experimentally for the cuprates.
