arXiv:cond-mat/0504289 · The European Physical Journal B

Mott transition in the asymmetric Hubbard model at half-filling within dynamical mean-field theory

I. V. Stasyuk, O. B. Hera

Published Dec 1, 2005• 8 citations

DOI: 10.1140/epjb/e2005-00406-x

Related papers

Dynamical mean-field theory of the Hubbard-Holstein model at half-filling: electron-phonon interaction effects on the finite temperature Mott transition

Jae Hyun Yun, Han-Yong Choi, Gun Sang Jeon +2 more

Bulletin of the American Physical SocietyMar 14, 20060 citations

Critical behavior near the Mott transition in the half-filled asymmetric Hubbard model

Anh-Tuan Hoang, Duc‐Anh Le

Physica B Condensed MatterJan 21, 20163 citations

Mott transition in the asymmetric hubbard model at half-filling: Equation of motion approach

Anh-Tuan Hoang, Thi-Thu-Trang Tran, Duc‐Anh Le

Journal of the Korean Physical SocietyJan 1, 20163 citations

Mott Transition in the Mass Imbalanced Ionic Hubbard Model at Half Filling

Nguyen Thi Hai Yen, Le Duc Anh, Hoàng Anh Tuấn +2 more

Communications in PhysicsOct 22, 20191 citation

Mott–Hubbard and Anderson transitions in dynamical mean-field theory

Krzysztof Byczuk, Walter Hofstetter, D. Vollhardt

arXiv:cond-mat/0502257Physica B Condensed MatterFeb 18, 20053 citations

Dynamical mean-field study of the Mott transition in the half-filled Hubbard model on a triangular lattice

Karan Aryanpour, Warren E. Pickett, Richard T. Scalettar

arXiv:cond-mat/0604609Physical Review BAug 30, 200654 citations

arXiv:cond-mat/0504289 · The European Physical Journal B

Mott transition in the asymmetric Hubbard model at half-filling within dynamical mean-field theory

I. V. Stasyuk, O. B. Hera

Published Dec 1, 2005• 8 citations

arXiv HTML PDF

DOI: 10.1140/epjb/e2005-00406-x

Related papers

Dynamical mean-field theory of the Hubbard-Holstein model at half-filling: electron-phonon interaction effects on the finite temperature Mott transition

Jae Hyun Yun, Han-Yong Choi, Gun Sang Jeon +2 more

Bulletin of the American Physical SocietyMar 14, 20060 citations

Critical behavior near the Mott transition in the half-filled asymmetric Hubbard model

Anh-Tuan Hoang, Duc‐Anh Le

Physica B Condensed MatterJan 21, 20163 citations

Mott transition in the asymmetric hubbard model at half-filling: Equation of motion approach

Anh-Tuan Hoang, Thi-Thu-Trang Tran, Duc‐Anh Le

We investigate the Mott metal-insulator transition in the asymmetric Hubbard model, which may describe the ground states of fermionic atoms trapped in optical lattices. We use the dynamical mean-field theory and the equation of motion approach to calculate the density of states at the Fermi level and the double occupation for various values of the on-site interaction U and the hopping asymmetry r . The critical interaction is also obtained as a function of the hopping asymmetry. Our results are in good agreement with the ones obtained by using the dynamical mean field theory with the exact diagonalization and the quantum Monte Carlo techniques.We investigate the Mott metal-insulator transition in the asymmetric Hubbard model, which may describe the ground states of fermionic atoms trapped in optical lattices. We use the dynamical mean-field theory and the equation of motion approach to calculate the density of states at the Fermi level and the double occupation for various values of the on-site interaction U and the hopping asymmetry r . The critical interaction is also obtained as a function of the hopping asymmetry. Our results are in good agreement with the ones obtained by using the dynamical mean field theory with the exact diagonalization and the quantum Monte Carlo techniques.

Journal of the Korean Physical SocietyJan 1, 20163 citations

Mott Transition in the Mass Imbalanced Ionic Hubbard Model at Half Filling

Nguyen Thi Hai Yen, Le Duc Anh, Hoàng Anh Tuấn +2 more

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 for a fixed mass imbalanced parameter r the critical interaction Uc increases when the ionic energy $\Delta$ is increased. In the other hand, for a fixed $\Delta$ , $U_c$ decreases with increasing the mass imbalance. We also show the existence of BI phase in the system for the case $\Delta \ne 0$ , $U=0$ and calculate the staggered charge density $n_B − n_A$ as a function of the interaction for different values of the mass imbalance. Our results in the limiting cases ( $r = 1$ ; $\Delta \ne 0$ or/and $\Delta = 0$ ; $r\ne 1$ ) are in good agreement with those obtained from full dynamical mean field theory.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 for a fixed mass imbalanced parameter r the critical interaction Uc increases when the ionic energy $\Delta$ is increased. In the other hand, for a fixed $\Delta$, $U_c$ decreases with increasing the mass imbalance. We also show the existence of BI phase in the system for the case $\Delta \ne 0$, $U=0$ and calculate the staggered charge density $n_B − n_A$ as a function of the interaction for different values of the mass imbalance. Our results in the limiting cases ($r = 1$; $\Delta \ne 0$ or/and $\Delta = 0$; $r\ne 1$) are in good agreement with those obtained from full dynamical mean field theory.

Communications in PhysicsOct 22, 20191 citation

Mott–Hubbard and Anderson transitions in dynamical mean-field theory

Krzysztof Byczuk, Walter Hofstetter, D. Vollhardt

arXiv:cond-mat/0502257Physica B Condensed MatterFeb 18, 20053 citations

Dynamical mean-field study of the Mott transition in the half-filled Hubbard model on a triangular lattice

Karan Aryanpour, Warren E. Pickett, Richard T. Scalettar

We employ dynamical mean-field theory (DMFT) with a quantum Monte Carlo atomic solver to investigate the finite-temperature Mott transition in the Hubbard model with nearest-neighbor hopping on a triangular lattice at half-filling. We estimate the value of the critical interaction to be ${U}_{c}=12.0\ifmmode\pm\else\textpm\fi{}0.5$ in units of the hopping amplitude $t$ through the evolution of the magnetic moment, spectral function, internal energy, and specific heat as the interaction $U$ and temperature $T$ are varied. This work also presents a comparison between DMFT and finite-size determinant quantum Monte Carlo calculations and a discussion of the advantages and limitations of both methods.We employ dynamical mean-field theory (DMFT) with a quantum Monte Carlo atomic solver to investigate the finite-temperature Mott transition in the Hubbard model with nearest-neighbor hopping on a triangular lattice at half-filling. We estimate the value of the critical interaction to be ${U}_{c}=12.0\ifmmode\pm\else\textpm\fi{}0.5$ in units of the hopping amplitude $t$ through the evolution of the magnetic moment, spectral function, internal energy, and specific heat as the interaction $U$ and temperature $T$ are varied. This work also presents a comparison between DMFT and finite-size determinant quantum Monte Carlo calculations and a discussion of the advantages and limitations of both methods.

arXiv:cond-mat/0604609Physical Review BAug 30, 200654 citations

\Delta

is increased. In the other hand, for a fixed

\Delta

U_c

decreases with increasing the mass imbalance. We also show the existence of BI phase in the system for the case

\Delta \ne 0

U=0

and calculate the staggered charge density

n_B − n_A

as a function of the interaction for different values of the mass imbalance. Our results in the limiting cases (

r = 1

;

\Delta \ne 0

or/and

\Delta = 0

;

r\ne 1

) are in good agreement with those obtained from full dynamical mean field theory.

t

through the evolution of the magnetic moment, spectral function, internal energy, and specific heat as the interaction

U

and temperature

T

are varied. This work also presents a comparison between DMFT and finite-size determinant quantum Monte Carlo calculations and a discussion of the advantages and limitations of both methods.