| dc.creator | Laad, MS | |
| dc.creator | Craco, I | |
| dc.creator | Muller-Hartmann, E | |
| dc.date | 2001 | |
| dc.date | 37043 | |
| dc.date | 2014-11-17T08:14:33Z | |
| dc.date | 2015-11-26T16:41:29Z | |
| dc.date | 2014-11-17T08:14:33Z | |
| dc.date | 2015-11-26T16:41:29Z | |
| dc.date.accessioned | 2018-03-28T23:25:43Z | |
| dc.date.available | 2018-03-28T23:25:43Z | |
| dc.identifier | Physical Review B. American Physical Soc, v. 63, n. 21, 2001. | |
| dc.identifier | 0163-1829 | |
| dc.identifier | WOS:000169060700056 | |
| dc.identifier | 10.1103/PhysRevB.63.214419 | |
| dc.identifier | http://www.repositorio.unicamp.br/jspui/handle/REPOSIP/79862 | |
| dc.identifier | http://www.repositorio.unicamp.br/handle/REPOSIP/79862 | |
| dc.identifier | http://repositorio.unicamp.br/jspui/handle/REPOSIP/79862 | |
| dc.identifier.uri | http://repositorioslatinoamericanos.uchile.cl/handle/2250/1272944 | |
| dc.description | We investigate the role of orbital degeneracy in the double-exchange model. In the J(H)--> infinity limit, an effective generalized 'Hubbard' model incorporating orbital pseudospin degrees of freedom is derived. The model possesses an exact solution in one and in infinite dimensions. In one-dimension, the metallic phase off 'half-filling' is a Luttinger liquid with pseudospin-charge separation. Using the d=infinity solution for our effective model, we show how many experimental observations for the well-doped (x similar or equal to0.3) three-dimensional manganites La1-xSrxMnO3 can be qualitatively explained by invoking the role of orbital degeneracy in the double exchange model. | |
| dc.description | 63 | |
| dc.description | 21 | |
| dc.language | en | |
| dc.publisher | American Physical Soc | |
| dc.publisher | College Pk | |
| dc.publisher | EUA | |
| dc.relation | Physical Review B | |
| dc.relation | Phys. Rev. B | |
| dc.rights | aberto | |
| dc.source | Web of Science | |
| dc.subject | Phase-diagram | |
| dc.subject | Magnetoresistance | |
| dc.subject | La1-xcaxmno3 | |
| dc.subject | La1-xsrxmno3 | |
| dc.subject | Manganites | |
| dc.subject | Scattering | |
| dc.subject | Oxide | |
| dc.subject | Limit | |
| dc.subject | Field | |
| dc.subject | Order | |
| dc.title | Role of orbital degeneracy in double-exchange systems | |
| dc.type | Artículos de revistas | |
