Artículo
Classical Antiferromagnetism in Kinetically Frustrated Electronic Models
Sposetti, Cintia Natalia
; Bravo, Barbara
; Trumper, Adolfo Emilio
; Gazza, Claudio Javier
; Manuel, Luis Oscar
Fecha de publicación:
05/2014
Editorial:
American Physical Society
Revista:
Physical Review Letters
ISSN:
0031-9007
Idioma:
Inglés
Tipo de recurso:
Artículo publicado
Clasificación temática:
Resumen
We study, by means of the density matrix renormalization group, the infinite U Hubbard model—with one hole doped away from half filling—in triangular and square lattices with frustrated hoppings, which invalidate Nagaoka’s theorem. We find that these kinetically frustrated models have antiferromagnetic ground states with classical local magnetization in the thermodynamic limit. We identify the mechanism of this kinetic antiferromagnetism with the release of the kinetic energy frustration, as the hole moves in the established antiferromagnetic background. This release can occur in two different ways: by a nontrivial spin Berry phase acquired by the hole, or by the effective vanishing of the hopping amplitude along the frustrating loops.
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Articulos(CCT - ROSARIO)
Articulos de CTRO.CIENTIFICO TECNOL.CONICET - ROSARIO
Articulos de CTRO.CIENTIFICO TECNOL.CONICET - ROSARIO
Articulos(IFIR)
Articulos de INST.DE FISICA DE ROSARIO (I)
Articulos de INST.DE FISICA DE ROSARIO (I)
Citación
Sposetti, Cintia Natalia; Bravo, Barbara; Trumper, Adolfo Emilio; Gazza, Claudio Javier; Manuel, Luis Oscar; Classical Antiferromagnetism in Kinetically Frustrated Electronic Models; American Physical Society; Physical Review Letters; 112; 5-2014; 187204-187204
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