# Reentrant charge order transition in the extended Hubbard model.

@article{Pietig1999ReentrantCO, title={Reentrant charge order transition in the extended Hubbard model.}, author={Rainer Pietig and Ralf Bulla and Stefan Blawid}, journal={Physical Review Letters}, year={1999}, volume={82}, pages={4046-4049} }

We study the extended Hubbard model with both on-site and nearest neighbor Coulomb repulsion ($U$ and $V$, respectively) in the Dynamical Mean Field theory. At quarter filling, the model shows a transition to a charge ordered phase with different sublattice occupancies $n_A \nen_B$. The effective mass increases drastically at the critical $V$ and a pseudo-gap opens in the single-particle spectral function for higher values of $V$. The $V_c(T)$-curve has a negative slope for small temperatures…

## 49 Citations

Different orderings in the narrow-band limit of the extended Hubbard model on the Bethe lattice

- Physics
- 2010

AbstractWe present the exact solution of a system of Fermi particles
living on the sites of a Bethe lattice with coordination number
z and interacting through on-site U and nearest-neighbor V…

Role of the attractive intersite interaction in the extended Hubbard model

- Physics
- 2009

We consider the extended Hubbard model in the atomic limit on a Bethe lattice with coordination number z. By using the equations of motion formalism, the model is exactly solved for both attractive…

Doping-driven metal-insulator transitions and charge orderings in the extended Hubbard model

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- 2016

We perform a thorough study of the extended Hubbard model featuring local and nearest-neighbor Coulomb repulsion. Using the dynamical mean-field theory we investigated the zero-temperature phase…

Theory of the reentrant charge-order transition in the manganites

- Physics
- 2001

A theoretical model for the reentrant charge-order transition in the manganites is examined. This transition is studied with a purely electronic model for the eg Mn electrons: the extended Hubbard…

Charge order in the extended Hubbard model

- Physics
- 2003

Magnetic and charge order in half-filled and doped finite two-dimensional (8 ? 8) clusters described by the extended Hubbard Hamiltonian with medium to large on-site (U) and intersite (V) Coulomb…

Metal-insulator transition in the quarter-filled frustrated checkerboard lattice

- Physics
- 2005

Abstract.We study the electronic structure and correlations in the geometrically
frustrated two dimensional checkerboard lattice. In the large U limit
considered here we start from an extended…

Nonlocal Coulomb correlations in metals close to a charge order insulator transition.

- Physics, MedicinePhysical review letters
- 2007

The charge ordering transition induced by the nearest-neighbor Coulomb repulsion V in the 1/4-filled extended Hubbard model is investigated using cellular dynamical mean-field theory. We find a…

One-dimensional extended Hubbard model in the atomic limit.

- Physics, MedicinePhysical review. E, Statistical, nonlinear, and soft matter physics
- 2008

This study evidences that a finite-range order persists for a wide range of the temperature, as shown by the behavior of the correlation functions and by the two-peak structure exhibited by the charge susceptibility and the entropy.

Nearest-neighbor repulsion and competing charge and spin order in the extended Hubbard model

- Physics
- 2006

We generalize the two-particle self-consistent approach (TPSC) to study the extended Hubbard model, where nearest-neighbor interaction is present in addition to the usual local screened interaction.…

Diversity of charge orderings in correlated systems.

- Physics, MedicinePhysical review. E
- 2017

This work studies the zero-bandwidth limit of the extended Hubbard model, which can be considered as a simple effective model of charge ordered insulators and derives the exact ground state diagrams for different lattice dimensionalities.

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