The Mott metal-insulator transition in the two-band Hubbard model in infinite dimensions is studied by using the linearized dynamical mean-field theory. The discontinuity in the chemical potential for the change from hole to electron doping is calculated analytically as a function of the on-site Coulomb interaction $U$ at the $d$ -orbital and the charge-transfer energy $Δ$ between the $d$ - and $p$ -orbitals. Critical behaviour of the quasiparticle weight is also obtained analytically as a function of $U$ and $Δ$ . The analytic results are in good agreement with the numerical results of the exact diagonalization method.The Mott metal-insulator transition in the two-band Hubbard model in infinite dimensions is studied by using the linearized dynamical mean-field theory. The discontinuity in the chemical potential for the change from hole to electron doping is calculated analytically as a function of the on-site Coulomb interaction $U$ at the $d$-orbital and the charge-transfer energy $Δ$ between the $d$- and $p$-orbitals. Critical behaviour of the quasiparticle weight is also obtained analytically as a function of $U$ and $Δ$. The analytic results are in good agreement with the numerical results of the exact diagonalization method.

arXiv:cond-mat/0107202Journal of the Physical Society of JapanOct 1, 200112 citations

The Mott Metal-Insulator Transition: Models and Methods

Florian Gebhard

Mar 20, 1997148 citations

Critical Behaviour near the Mott Transition in a Two-Band Hubbard Model

Ohashi, Yasuo, Yoshiaki Ōno

The Mott metal-insulator transition in the two-band Hubbard model in infinite dimensions is studied by using the linearized dynamical mean-field theory. The discontinuity in the chemical potential for the change from hole to electron doping is calculated analytically as a function of the on-site Coulomb interaction $U$ , and the charge-transfer energy $Δ$ between the $d$ - and $p$ -orbitals, transfer integrals $t_{pd}$ , $t_{pp}$ , $t_{dd}$ between $p$ - $d$ , $p$ - $p$ and $d$ - $d$ sites respectively. The critical behaviour of the quasiparticle weight is also obtained analytically.The Mott metal-insulator transition in the two-band Hubbard model in infinite dimensions is studied by using the linearized dynamical mean-field theory. The discontinuity in the chemical potential for the change from hole to electron doping is calculated analytically as a function of the on-site Coulomb interaction $U$, and the charge-transfer energy $Δ$ between the $d$- and $p$-orbitals, transfer integrals $t_{pd}$, $t_{pp}$, $t_{dd}$ between $p$-$d$, $p$-$p$ and $d$-$d$ sites respectively. The critical behaviour of the quasiparticle weight is also obtained analytically.

arXiv:cond-mat/0109446Sep 25, 20010 citations

The Mott Metal-Insulator Transition

Florian Gebhard

Springer tracts in modern physicsJan 1, 1997522 citations

U

at the

d

-orbital and the charge-transfer energy

Δ

between the

d

- and

p

-orbitals. Critical behaviour of the quasiparticle weight is also obtained analytically as a function of

U

and

Δ

. The analytic results are in good agreement with the numerical results of the exact diagonalization method.

U

, and the charge-transfer energy

Δ

between the

d

- and

p

-orbitals, transfer integrals

t_{pd}

t_{pp}

t_{dd}

between

p

d

p

p

and

d

d

sites respectively. The critical behaviour of the quasiparticle weight is also obtained analytically.