spl(2,1) dynamical supersymmetry and suppression of ferromagnetism in flat band double-exchange models
| dc.creator | Penc, Karlo | |
| dc.creator | Lacaze, Robert | |
| dc.date | 2000-09-22 | |
| dc.date.accessioned | 2026-07-07T12:47:13Z | |
| dc.date.available | 2026-07-07T12:47:13Z | |
| dc.description | The low energy spectrum of the ferromagnetic Kondo lattice model on a N-site complete graph extended with on-site repulsion is obtained from the underlying spl(2,1) algebra properties in the strong coupling limit. The ferromagnetic ground state is realized for 1 and N+1 electrons only. We identify the large density of states to be responsible for the suppression of the ferromagnetic state and argue that a similar situation is encountered in the Kagome, pyrochlore, and other lattices with flat bands in their one-particle density of states. | |
| dc.description | 7 pages, 1 figure | |
| dc.identifier | https://arxiv.org/abs/cond-mat/0009358 | |
| dc.identifier | http://arxiv.org/abs/cond-mat/0009358 | |
| dc.identifier | Europhys. Lett. 48, 561 (1999) | |
| dc.identifier | doi:10.1209/epl/i1999-00520-y | |
| dc.identifier.uri | http://salesiana.dossiersoluciones.com/handle/123456789/221643 | |
| dc.subject | Strongly Correlated Electrons | |
| dc.title | spl(2,1) dynamical supersymmetry and suppression of ferromagnetism in flat band double-exchange models | |
| dc.type | text |