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 recently developed by Bulla and Potthoff. The phase boundary of the metal-insulator transition is obtained analytically as a function of the on-site Coulomb interaction at the d-orbital, the charge-transfer energy between the d- and p-orbitals and the hopping integrals between p-d, d-d and p-p orbitals. The result is in good agreement with the numerical results obtained from the exact diagonalization method.
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Received 5 October 2000 and Received in final form 8 December 2000
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Ōno, Y., Bulla, R. & Hewson, A. Phase diagram of the Mott transition in a two-band Hubbard model in infinite dimensions. Eur. Phys. J. B 19, 375–384 (2001). https://doi.org/10.1007/s100510170313
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DOI: https://doi.org/10.1007/s100510170313