Web11 feb. 2024 · Abstract The conditions for the emergence of inhomogeneous states are investigated from analysis of the equation of state. It is assumed that Hubbard energy U > t, i.e., corresponds to the conditions of strong electron–electron correlations. The magnetic phase diagram is obtained in a wide range of electron concentrations corresponding to … 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 …
Quantum Integrability of 1D Ionic Hubbard Model - Hosseinzadeh …
WebThe 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, … 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 how does internet work with directv
Probing the Bond Order Wave Phase Transitions of the Ionic …
Web16 feb. 2024 · The quantum integrability of the 1D ionic Hubbard model (IHM) is established using two independent numerical methods, namely i) energy level spacing statistics and ii) occupation profile of one-particle density matrix (OPDM) eigen-values. Both methods suggest that the 1D IHM is integrable. 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 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]. how does internship help students