Single bipolaronic Transition in Jahn-Teller Model
| dc.creator | Nourafkan, Reza | |
| dc.creator | Capone, Massimo | |
| dc.creator | Nafari, Nasser | |
| dc.date | 2009-04-10 | |
| dc.date.accessioned | 2026-07-07T13:02:28Z | |
| dc.date.available | 2026-07-07T13:02:28Z | |
| dc.description | We investigate the bipolaronic crossover and the pairing transition for a two-orbital model with Jahn-Teller coupling to a two-fold degenerate phonon mode. The evolution from weak to strong coupling is reminiscent of the behavior of the single-band Holstein model: The polaron crossover in which the electrons and phonons become strongly entangled occurs for a weaker coupling than the binding of bipolarons, which gives rise to a metal-insulator transition. Interestingly, a single bipolaronic transition takes place also when the two bands have significantly different bandwidths, as opposed to the case of repulsive Hubbard-like interactions for which an orbital-selective Mott transition has been reported. This behavior is related to the inter-orbital nature of the Jahn-Teller coupling. | |
| dc.identifier | https://arxiv.org/abs/0904.1711 | |
| dc.identifier | http://arxiv.org/abs/0904.1711 | |
| dc.identifier.uri | http://salesiana.dossiersoluciones.com/handle/123456789/226459 | |
| dc.subject | Strongly Correlated Electrons | |
| dc.title | Single bipolaronic Transition in Jahn-Teller Model | |
| dc.type | text |