Phase diagram of the half-filled ionic Hubbard model in the limit of strong correlations
We investigate the ionic Hubbard model (IHM) at half-filling in the limit of strong correlations
and large ionic potential. The low-energy effective Hamiltonian in this limit, obtained by a …
and large ionic potential. The low-energy effective Hamiltonian in this limit, obtained by a …
Phase transitions in the binary-alloy Hubbard model: Insights from strong-coupling perturbation theory
In the binary alloy with composition A x B 1− x of two atoms with ionic energy scales±Δ, an
apparent Anderson insulator (AI) is obtained as a result of randomness in the position of …
apparent Anderson insulator (AI) is obtained as a result of randomness in the position of …
Quantum phase transitions in the two dimensional ionic-Hubbard model
A Shahbazy, M Ebrahimkhas - Chinese Journal of Physics, 2019 - Elsevier
We employ the dynamical mean field approximation to study the effects of ionic potential (Δ)
on the square lattice Hubbard model. At half-filling when the staggered potential (Δ) …
on the square lattice Hubbard model. At half-filling when the staggered potential (Δ) …
[PDF][PDF] Mott Transition in the Mass Imbalanced Ionic Hubbard Model at Half Filling
NTH Yen, ANH LE DUC, HA Tuan, NT Thang… - Communications in …, 2019 - iop.vast.vn
The Mott-Hubbard metal-insulator transition in the half-filled mass imbalanced ionic
Hubbard model is investigated using the two-site dynamical mean field theory. We find that …
Hubbard model is investigated using the two-site dynamical mean field theory. We find that …
Interplay of strong correlations and covalency in ionic band insulators
We have addressed the role of electronic correlations in different kind of band insulators by
using two orbital Hubbard model within dynamical mean-field theory (DMFT). We have …
using two orbital Hubbard model within dynamical mean-field theory (DMFT). We have …
Is there a superconducting phase in the half-filled ionic Hubbard model?
A Chattopadhyay, S Bag, HR Krishnamurthy… - arXiv preprint arXiv …, 2019 - arxiv.org
We investigate the ionic Hubbard model (IHM) at half-filling in the limit of strong correlations
and large ionic potential. The low energy effective Hamiltonian in this limit, obtained by a …
and large ionic potential. The low energy effective Hamiltonian in this limit, obtained by a …