@article{oai:niigata-u.repo.nii.ac.jp:00002135, author = {Ohashi, Yasuo and Ono, Yoshiaki}, issue = {10}, journal = {Journal of the Physical Society of Japan, Journal of the Physical Society of Japan}, month = {Oct}, note = {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.}, pages = {2989--2998}, title = {Critical Behaviour near the Mott Metal-Insulator Transition in a Two-band Hubbard Model}, volume = {70}, year = {2001} }