Ionic hubbard model
WebPhase diagram of the ionic Hubbard model with density-dependent hopping P. Roura-Bas Centro At omico Bariloche, GAIDI, CONICET, 8400 Bariloche, Argentina A. A. Aligia Instituto de Nanociencia y Nanotecnolog a CNEA-CONICET, GAIDI, Centro At omico Bariloche and Instituto Balseiro, 8400 Bariloche, Argentina Web17 sep. 2024 · Mass imbalance in the ionic Hubbard model: a DRMG study. We investigated the ionic Hubbard model with mass imbalance in one dimension, using the density …
Ionic hubbard model
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Web20 jan. 2024 · The ionic Hubbard model has in addition to hopping ( ∼t) and onsite Coulomb repulsion ( ∼U ), a staggered ionic potential ( ∼Δ) which breaks … Web22 jun. 2011 · Dynamics in the one-dimensional extended ionic Hubbard model. We investigate single-particle spectral densities and dynamical charge and spin structure …
Web11 mei 2015 · The ionic Hubbard model, an extended version of the Hubbard model, was proposed to explain the neutral-ionic transition in the quasi-one-dimensional … Web15 apr. 2024 · Abstract We investigate the ionic Hubbard model (IHM) at half-filling in the limit of strong correlations and large ionic potential. The low-energy effective …
WebThe ionic Hubbard model (1) on the striped triangu-lar lattice of Fig. 1 considered here contains geometrical frustration. This is in contrast to most previous work which has focused on bipartite, i.e., unfrustrated, lattices with different site energies, ∆, on each of the bipartite WebarXiv:0705.0755v1 [cond-mat.str-el] 5 May 2007 Metallic phase inthe two-dimensional ionic Hubbard model K. Bouadim1, N. Paris2, F. H´ebert 1, G.G. Batrouni , and R.T. Scalettar2 1INLN, Universit´e de Nice Sophia–Antipolis, CNRS; 1361 route des Lucioles, 06560 Valbonne, France and 2Physics Department, University of California, Davis, California …
Web6 dec. 2024 · (a) Phase diagram of the 1D ionic Hubbard model as a function of U for fixed Δ and J. Δ c and Δ s are the charge and spin gaps. (b) The bond order parameter B ^ …
Webgap opens again and increases upon increasing the Hubbard interaction U. For U ≤ 9t and ∆ ≈ 0 the phase of the system is metallic, but for larger U the system is in the Mott insulator phase. Keywords: Dynamical mean field theory, Ionic-Hubbard Model 1. Introduction There are many quantum phase transitions which are driven by interac-tions. greenslade taylor and hunt burnham on seagreenslade taylor hunt auction calendarWebJuly 2005 · Physical Review B. We show in this paper that the single-particle spectral-weight function (SWF) of the one-dimensional ionic Hubbard model at half filling exhibits critical behavior ... greenslade taylor hunt agricultural auctionsWeb10 feb. 2016 · Studying the ionic Hubbard model at the lowest order, we find two insulating states, one with Mott character at large U and another with single-particle gap character at large ionic potential Δ. The present approach gives a … fmt warehousing corpWeb10 feb. 2016 · Studying the ionic Hubbard model at the lowest order, we find two insulating states, one with Mott character at large U and another with single-particle gap character … fmtv truck technical drawingWebHubbard model have been investigated for this purpose, like the extended Hubbard model [1], the ionic Hubbard model in one and two dimensions [2–6], the two-band Hubbard model [7] and the bilayer Hubbard model [8–15]. The latter has been especially important in relation to the bilayer high-T c cuprates [16, 17]. fmtv water fordingWeb3 apr. 2024 · Hubbard model with nearest- and next-nearest-neighbour hopping in the Hartree-Fock approximation D Grensing-Itinerant antiferromagnetism in the Hubbard model K Eapen and D K Ghosh-Recent citations Inclusion of intersite spatial correlations in the alloy analogy approach to the half-filled ionic Hubbard model D A Rowlands and Yu … greenslade taylor hunt auction results