Incommmensurability and unconventional superconductor to insulator transition in the Hubbard model with bond-charge interaction

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dc.creatorAligia, A. A.
dc.creatorAnfossi, A.
dc.creatorArrachea, L.
dc.creatorBoschi, C. Degli Esposti
dc.creatorDobry, A. O.
dc.creatorGazza, C.
dc.creatorMontorsi, A.
dc.creatorOrtolani, F.
dc.creatorTorio, M. E.
dc.date2007-04-05
dc.date2007-11-14
dc.date.accessioned2026-07-07T08:42:29Z
dc.date.available2026-07-07T08:42:29Z
dc.descriptionWe determine the quantum phase diagram of the one-dimensional Hubbard model with bond-charge interaction X in addition to the usual Coulomb repulsion U at half-filling. For large enough X and positive U the model shows three phases. For large U the system is in the spin-density wave phase already known in the usual Hubbard model. As U decreases, there is first a spin transition to a spontaneously dimerized bond-ordered wave phase and then a charge transition to a novel phase in which the dominant correlations at large distances correspond to an incommensurate singlet superconductor.
dc.description5 pages, 3 figures
dc.identifierhttps://arxiv.org/abs/0704.0717
dc.identifierhttp://arxiv.org/abs/0704.0717
dc.identifierPhys. Rev. Lett. 99, 206401 (2007)
dc.identifierdoi:10.1103/PhysRevLett.99.206401
dc.identifier.urihttp://salesiana.dossiersoluciones.com/handle/123456789/141974
dc.subjectStrongly Correlated Electrons
dc.subjectSuperconductivity
dc.titleIncommmensurability and unconventional superconductor to insulator transition in the Hubbard model with bond-charge interaction
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