Artículo
Extended Hubbard model: Charge ordering and Wigner-Mott transition
Fecha de publicación:
10/2010
Editorial:
American Physical Society
Revista:
Physical Review B: Condensed Matter and Materials Physics
ISSN:
1098-0121
Idioma:
Inglés
Tipo de recurso:
Artículo publicado
Clasificación temática:
Resumen
Strong correlations effects, which are often associated to the approach to a Mott insulating state, in some cases may be observed even far from half filling. This typically happens whenever the intersite Coulomb repulsion induces a tendency toward charge ordering, an effect that confines the electrons, and in turn favors local moment formation, i.e., Mott localization. A distinct intermediate regime then emerges as a precursor of such a Wigner-Mott transition, which is characterized by both charge and spin correlations, displaying large mass enhancements and strong renormalizations of other Fermi-liquid parameters. Here we present a careful study of a quarter-filled extended Hubbard model-a simple example where such physics can be studied in detail, and discuss its relevance for the understanding of the phenomenology of low-density two-dimensional electron gases. © 2010 The American Physical Society.
Palabras clave:
Extended
,
Hubbard
,
Wigner
,
Mott
,
Transition
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Colecciones
Articulos(IFIBA)
Articulos de INST.DE FISICA DE BUENOS AIRES
Articulos de INST.DE FISICA DE BUENOS AIRES
Citación
Amaricci, A.; Camjayi, Alberto; Haule, K.; Kotliar, G.; Tanasković, D.; et al.; Extended Hubbard model: Charge ordering and Wigner-Mott transition; American Physical Society; Physical Review B: Condensed Matter and Materials Physics; 82; 15; 10-2010; 155102-155102
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