Thomas-Fermi approximation for the quasi-two-dimensional electron gas
To take into account static correlation effects in the quasi-two-dimensional electron gas a screened Coulombic interaction between particles is studied. The Thomas-Fermi approximation is used and the potential screening appears as a function of the Wigner-Seitz density parameter r(s) and the effecti...
| Autores: | , |
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| Tipo de recurso: | artículo |
| Estado: | Versión publicada |
| Fecha de publicación: | 2001 |
| País: | México |
| Institución: | Universidad Nacional Autónoma de México |
| Repositorio: | Sistema de Información de la Facultad de Ciencias, UNAM |
| OAI Identifier: | oai:repositorio.fciencias.unam.mx:11154/1964 |
| Acceso en línea: | http://hdl.handle.net/11154/1964 |
| Access Level: | acceso abierto |
| Palabra clave: | Chemistry, Physical Mathematics, Interdisciplinary Applications Physics, Atomic, Molecular & Chemical Thomas-Fermi electron gas Wigner crystallization jellium models |
| Sumario: | To take into account static correlation effects in the quasi-two-dimensional electron gas a screened Coulombic interaction between particles is studied. The Thomas-Fermi approximation is used and the potential screening appears as a function of the Wigner-Seitz density parameter r(s) and the effective width t of the system. With the self-consistent field theory applied to the modified deformable jellium, the ground-state energy per particle and the conditions for electron localization are obtained in terms of the interparticle distance and the screening parameter mu. A critical minimum characteristic width t(c) is obtained |
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