Monte Carlo determination of the phase diagram of the double-exchange model
We study the phase diagram of the double exchange model, with antiferromagnetic interactions, in a cubic lattice both at zero and finite temperature. There is a rich variety of magnetic phases, combined with regions where phase separation takes place. We identify phases, intrinsic to the cubic latti...
| Autores: | , , , , |
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| Tipo de recurso: | artículo |
| Fecha de publicación: | 2001 |
| País: | España |
| Institución: | Universidad Complutense de Madrid (UCM) |
| Repositorio: | Docta Complutense |
| Idioma: | inglés |
| OAI Identifier: | oai:docta.ucm.es:20.500.14352/60013 |
| Acceso en línea: | https://hdl.handle.net/20.500.14352/60013 |
| Access Level: | acceso abierto |
| Palabra clave: | 53 51-73 Triangular Heisenberg-antiferromagnet Transition-temperature Electronic models Doped manganites Magnetic order Kondo-lattice Spin dynamics Charge Separation Systems. Física (Física) Física-Modelos matemáticos 22 Física |
| Sumario: | We study the phase diagram of the double exchange model, with antiferromagnetic interactions, in a cubic lattice both at zero and finite temperature. There is a rich variety of magnetic phases, combined with regions where phase separation takes place. We identify phases, intrinsic to the cubic lattice, which are stable for realistic values of the interactions and dopings. Some of these phases break chiral symmetry, leading to unusual features. |
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