Szczegóły publikacji
Opis bibliograficzny
Variational Monte Carlo approach for the Hubbard model applied to twisted bilayer $WSe_{2}$ at half-filling / A. BIBORSKI, P. WÓJCIK, M. ZEGRODNIK // Physical Review. B ; ISSN 2469-9950. — Tytuł poprz.: Physical Review B, Condensed Matter and Materials Physics ; ISSN: 1098-0121. — 2024 — vol. 109 iss. 12 art. no.125144, s. 125144-1–125144-10. — Bibliogr. s. 125144-9–125144-10, Abstr. — Publikacja dostępna online od: 2024-03-25
Autorzy (3)
Dane bibliometryczne
| ID BaDAP | 152573 |
|---|---|
| Data dodania do BaDAP | 2024-04-23 |
| Tekst źródłowy | URL |
| DOI | 10.1103/PhysRevB.109.125144 |
| Rok publikacji | 2024 |
| Typ publikacji | artykuł w czasopiśmie |
| Otwarty dostęp |  |
| Czasopismo/seria | Physical Review, B |
Abstract
We consider an effective Hubbard model with spin- and direction-dependent complex hoppings t, applied to twisted homobilayer WSe2 using a variational Monte Carlo approach. The electronic correlations are taken into account by applying the Gutzwiller on-site correlator as well as long-range Jastrow correlators subjected to noninteracting part being of Pfaffian form. Our analysis shows the emergence of the Mott insulating state at the critical value of Hubbard interaction Uc1≈6.5|t|∼7|t| estimated by extrapolating the density-density equal-time two-particle Green's functions. The signatures of an intermediate insulating phase between Uc1 and Uc2≈9.5|t|∼10|t| are also discussed. Furthermore, we report the formation of the 120∘ in-plane Néel state indicated by the detailed analysis of the spin-spin correlation functions. As shown, switching between antiferromagnetic phases characterized by opposite chirality could be experimentally realized by the change of perpendicular electric field. In a proper range of electric fields, also a transition to the in-plane ferromagnetic state appears.
