Slave-boson theory of the Mott transition in the two-band Hubbard model

Abstract

We apply the slave-boson approach of Kotliar and Ruckenstein to the two-band Hubbard model with an Ising like Hund’s rule coupling and bands of different widths. On the mean-field level of this approach we investigate the Mott transition and observe both separate and joint transitions of the two bands depending on the choice of the interand intraorbital… (More)

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