Exchange interaction effects in the thermodynamic properties of quantum dots
| dc.creator | da Silva, Luis G. Dias | |
| dc.creator | Studart, Nelson | |
| dc.date | 2004-12-20 | |
| dc.date.accessioned | 2026-07-07T12:33:06Z | |
| dc.date.available | 2026-07-07T12:33:06Z | |
| dc.description | We study electron-electron interaction effects in the thermodynamic properties of quantum-dot systems. We obtain the direct and exchange contributions to the specific heat C_v in the self-consistent Hartree-Fock approximation at finite temperatures. An exchange-induced phase transition is observed and the transition temperature is shown to be inversely proportional to the size of the system. The exchange contribution to C_v dominates over the direct and kinetic contributions in the intermediate regime of interaction strength (r_s ~ 1). Furthermore, the electron-electron interaction modifies both the amplitude and the period of magnetic field induced oscillations in C_v. | |
| dc.description | 4 pages, 4 figures; To appear in Phys. Rev. B | |
| dc.identifier | https://arxiv.org/abs/cond-mat/0412542 | |
| dc.identifier | http://arxiv.org/abs/cond-mat/0412542 | |
| dc.identifier | Phys. Rev. B 71 113302 (2005). | |
| dc.identifier | doi:10.1103/PhysRevB.71.113302 | |
| dc.identifier.uri | http://salesiana.dossiersoluciones.com/handle/123456789/217009 | |
| dc.subject | Mesoscale and Nanoscale Physics | |
| dc.title | Exchange interaction effects in the thermodynamic properties of quantum dots | |
| dc.type | text |