Szczegóły publikacji
Opis bibliograficzny
Correlation-induced d-wave pairing in a quantum dot square lattice / A. BIBORSKI, M. P. NOWAK, M. ZEGRODNIK // Physical Review. B ; ISSN 2469-9950. — Tytuł poprz.: Physical Review B, Condensed Matter and Materials Physics ; ISSN: 1098-0121. — 2021 — vol. 104 iss. 24 art. no. 245430, s. 245430-1–245430-13. — Bibliogr. s. 245430-12–245430-13. — Publikacja dostępna online od: 2021-12-23
Autorzy (3)
Dane bibliometryczne
| ID BaDAP | 138471 |
|---|---|
| Data dodania do BaDAP | 2022-01-03 |
| Tekst źródłowy | URL |
| DOI | 10.1103/PhysRevB.104.245430 |
| Rok publikacji | 2021 |
| Typ publikacji | artykuł w czasopiśmie |
| Otwarty dostęp |  |
| Czasopismo/seria | Physical Review, B |
Abstract
We consider an electrostatically induced square lattice of quantum dots and study the role of electron-electron correlations in the resulting electronic features of the system. We utilize the Wannier functions methodology to construct a Hamiltonian for interacting fermions, and find that the change of the depth of the quantum dot confining potential results in a transition from a moderately, to strongly correlated regime of the system. We obtain the approximate ground state by means of the variational Monte Carlo method for a wide range of dopings. The values of microscopic parameters, charge gap, as well as spin- and pair-correlation functions obtained in the strongly correlated regime signify the presence of antiferromagnetic spin ordering and the realization of the Mott insulator phase. Moreover, we report on a two-dome structure of the emerging d-wave paired state residing on both sides of the half-filled case. The obtained results are discussed in view of the well-known family of unconventional superconducting materials, such as copper-based compounds.
