Physics – Condensed Matter – Strongly Correlated Electrons
Scientific paper
2000-10-05
Eur. Phys. J. B 19, 375 (2001)
Physics
Condensed Matter
Strongly Correlated Electrons
10 pages, 4 figures
Scientific paper
10.1007/s100510170313
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.
Bulla Ralf
Hewson Alex C.
Ono Yohei
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