Abstract
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 p d , t p p , t d d between p – d , p – p , and d – d sites respectively. The critical behaviour of the quasiparticle weight is also obtained analytically.
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