Szczegóły publikacji
Opis bibliograficzny
Ground and excited states of few-electron systems in spherical quantum dots / B. SZAFRAN, J. ADAMOWSKI, S. BEDNAREK // Physica. E, Low-Dimensional Systems & Nanostructures ; ISSN 1386-9477. — 1999 — vol. 4 iss. 1, s. 1–10. — Bibliogr s. 10, Abstr.
Autorzy (3)
Słowa kluczowe
Dane bibliometryczne
| ID BaDAP | 2635 |
|---|---|
| Data dodania do BaDAP | 2001-04-18 |
| Tekst źródłowy | URL |
| DOI | 10.1016/S1386-9477(98)00247-1 |
| Rok publikacji | 1999 |
| Typ publikacji | artykuł w czasopiśmie |
| Otwarty dostęp |  |
| Czasopismo/seria | Physica, E, Low Dimensional Systems & Nanostructures |
Abstract
Energy spectra of two- and three-electron systems confined in semiconductor quantum dots, i.e., artificial helium and lithium atoms, are studied by the variational method under the assumption of the spherically symmetric confinement potential of finite depth. It is shown that the electron pairs and triples can form bound states if the quantum 'capacity', V(0)R(2), of the quantum dot, is sufficiently large (V(0) is the potential-well depth and R is the quantum-dot radius). The conditions of binding have been determined for the ground and excited states. The binding energy and dipole transition energy have been calculated for several QDs. It is found that the dipole transition energy for the one-, two-, and three-electron artificial atoms is nearly independent of the number of electrons.
