Szczegóły publikacji
Opis bibliograficzny
Aharonov-Bohm oscillations in phosphorene quantum rings: mass anisotropy compensation by confinement potential / Tanmay THAKUR, Bartłomiej SZAFRAN // Physical Review. B ; ISSN 2469-9950. — Tytuł poprz.: Physical Review B, Condensed Matter and Materials Physics ; ISSN: 1098-0121. — 2022 — vol. 105 iss. 16 art. 165309, s. 165309-1–165309-7. — Bibliogr. s. 165309-6–165309-7. — Publikacja dostępna online od: 2022-04-22
Autorzy (2)
Dane bibliometryczne
| ID BaDAP | 140263 |
|---|---|
| Data dodania do BaDAP | 2022-06-03 |
| Tekst źródłowy | URL |
| DOI | 10.1103/PhysRevB.105.165309 |
| Rok publikacji | 2022 |
| Typ publikacji | artykuł w czasopiśmie |
| Otwarty dostęp |  |
| Czasopismo/seria | Physical Review, B |
Abstract
We consider the Aharonov-Bohm (AB) effect on a confined electron ground state in a quantum ring defined electrostatically within the phosphorene monolayer. The strong anisotropy of effective masses in phosphorene quenches ground-state oscillations for a circular ring because of interrupted persistent current circulation around the ring. An elliptic deformation of the confinement potential can compensate for the anisotropy of the effective masses and produce ground-state parity transformations with the AB periodicity. Moreover, a specific ratio of the semiaxes is determined for which the spectrum becomes identical to that of a circular quantum ring and an isotropic effective mass. We identify a generalized angular momentum operator which commutes with the continuum Hamiltonian for the chosen ratio of the semiaxes that closes the avoided crossings of energy levels for states of the same parity and spin. Ground-state oscillations for the two-electron ground state are also discussed.
