Ionic hubbard model
Web3 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 … WebHubbard 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].
Ionic hubbard model
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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 … Web10 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 …
Webone dimensional (1D) ionic Hubbard model (IHM), just a Hubbard model with a staggered potential which displaces by ∆ the energy levels of even and odd sites. … WebMele Hubbard model, respectively. This is realized by three Hamiltonians, H^ IH, H^IHZ and H^IHB, respectively. Conceptually, the Z2 broken Hamiltonian H^IHB has the most robust topology at the price of introducing a non-zero quantized spin current. The dimerized ionic Hubbard model H^ IH does not feature a strict topological
Web10 feb. 2024 · The ionic Hubbard model stems from this staggered potential. Many investigations into the ionic Hubbard model have been done at half filling by using … Web10 apr. 2024 · We obtain the quantum phase diagram of the ionic Hubbard model including electron-hole symmetric density-dependent hopping. The boundaries of the phases are determined by crossing of excited ...
Web22 jun. 2011 · Dynamics in the one-dimensional extended ionic Hubbard model. We investigate single-particle spectral densities and dynamical charge and spin structure …
Web9 sep. 2015 · Abstract. We realize and study the ionic Hubbard model using an interacting two-component gas of fermionic atoms loaded into an optical lattice. The bipartite … small toy chickensWebThe 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 small toy computerWeb12 apr. 2024 · As a recent successfully exfoliated non-van der Waals layered material, AgCrS2 has received a lot of attention. Motivated by its structure-related magnetic and ferroelectric behavior, a theoretical study on its exfoliated monolayer AgCr2S4 has been carried out in the present work. Based on density functional theory, the ground state and … small toy cars for saleWeb10 jul. 2013 · Notice that the usual uniform Hubbard model consisting of T + H U and periodic boundary conditions is particle-hole symmetric while the theorem distinguish … small toy collectionhihimaill.com/utilWeb1 apr. 2024 · The ionic Hubbard model (IHM) is the simplest model in which one can extend the Hubbard model, with added a staggered on-site ionic potential Δ. In the recent past the IHM has been studied in various dimensions and … hihigupin in englishWebThe ionic Hubbard model, a Hubbard model with an alternating single-electron potential, has been extensively studied from several points of view in condensed matter physics, … small toy christmas gifts