Monte Carlo study of O(3) antiferromagnetic models in three dimensions
We study three antiferromagnetic formulations of the O(3) spin model in three dimensions by means of Monte Carlo simulations: (1) a two parameter s model with nearest- and next-nearest neighbors couplings in a cubic lattice; (2) a face-centered-cubic lattice with nearest-neighbor interaction; (3) a...
| Autores: | , , , |
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| Tipo de recurso: | artículo |
| Fecha de publicación: | 1996 |
| País: | España |
| Institución: | Universidad Complutense de Madrid (UCM) |
| Repositorio: | Docta Complutense |
| Idioma: | inglés |
| OAI Identifier: | oai:docta.ucm.es:20.500.14352/60103 |
| Acceso en línea: | https://hdl.handle.net/20.500.14352/60103 |
| Access Level: | acceso abierto |
| Palabra clave: | 53 51-73 Spin-1/2 Heisenberg-antiferromagnet Frustrated quantum antiferromagnets Valence-bond Phase-transitions Square lattice Ground-states Neel state Order Peierls Systems. Física (Física) Física-Modelos matemáticos 22 Física |
| Sumario: | We study three antiferromagnetic formulations of the O(3) spin model in three dimensions by means of Monte Carlo simulations: (1) a two parameter s model with nearest- and next-nearest neighbors couplings in a cubic lattice; (2) a face-centered-cubic lattice with nearest-neighbor interaction; (3) a cubic lattice with a set of fully frustrating couplings. We discuss in all cases the vacua properties and analyze the phase transitions. Using finite-size scaling analysis we conclude that all phase transitions found are of first order. |
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