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Title

Strong-coupling phases of the t-t′ Hubbard model

AuthorsGonzález Carmona, José ; Alvarez, J. V.
Issue Date1-Jul-1997
PublisherAmerican Physical Society
CitationPhysical Review B 56: 367- 371 (1997)
AbstractWe study the strong-coupling regime of the t-t′ Hubbard model, filled up to the level of the van Hove singularities, by means of an exact diagonalization approach. We characterize the different phases of the model by the different sectors of the Hubert space with given quantum numbers. By looking for the ground state of the system, we find essentially the competition between a state with incipient ferromagnetism and other mimicking a d-wave condensate, which has the lowest energy in a large region of the phase space. ©1997 American Physical Society
Description5 págs.; 5 figs.
Publisher version (URL)https://doi.org/10.1103/PhysRevB.56.367
URIhttp://hdl.handle.net/10261/140743
DOI10.1103/PhysRevB.56.367
Identifiersdoi: 10.1103/PhysRevB.56.367
issn: 0163-1829
Appears in Collections:(CFMAC-IEM) Artículos
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