Phase Separation close to the density-driven Mott transition in the Hubbard-Holstein model

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dc.creatorCapone, M.
dc.creatorSangiovanni, G.
dc.creatorCastellani, C.
dc.creatorDi Castro, C.
dc.creatorGrilli, M.
dc.date2003-05-30
dc.date2004-01-28
dc.date.accessioned2026-07-07T08:22:24Z
dc.date.available2026-07-07T08:22:24Z
dc.descriptionThe density driven Mott transition is studied by means of Dynamical Mean-Field Theory in the Hubbard-Holstein model, where the Hubbard term leading to the Mott transition is supplemented by an electron-phonon (e-ph) term. We show that an intermediate e-ph coupling leads to a first-order transition at T=0, which is accompanied by phase separation between a metal and an insulator. The compressibility in the metallic phase is substantially enhanced. At quite larger values of the coupling a polaronic phase emerges coexisting with a non-polaronic metal.
dc.description4 pages, 3 figures. Slightly revised text. More details in Fig.1 and 2. Smaller size version of Fig.3
dc.identifierhttps://arxiv.org/abs/cond-mat/0305699
dc.identifierhttp://arxiv.org/abs/cond-mat/0305699
dc.identifierPhys. Rev. Lett. 92, 106401 (2004)
dc.identifierdoi:10.1103/PhysRevLett.92.106401
dc.identifier.urihttp://salesiana.dossiersoluciones.com/handle/123456789/135643
dc.subjectStrongly Correlated Electrons
dc.titlePhase Separation close to the density-driven Mott transition in the Hubbard-Holstein model
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