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arXiv · 0707.4535

Quantum phase transition in the two-band Hubbard model

T. A. Costi·A. Liebsch
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Abstract

The interaction between itinerant and Mott localized electronic states in strongly correlated materials is studied within dynamical mean field theory in combination with the numerical renormalization group method. A novel nonmagnetic zero temperature quantum phase transition is found in the bad-metallic orbital-selective Mott phase of the two-band Hubbard model, for values of the Hund's exchange which are relevant to typical transition metal oxides.

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T. A. Costi, A. Liebsch. 2007-10-22. Quantum phase transition in the two-band Hubbard model. https://doi.org/10.1103/physrevlett.99.236404

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