Quantum phase transition in the two-band Hubbard model

Details Quantum phase transition in the two-band Hubbard model Quantum phase transition in the two-band Hubbard model

2007-07-31

arxiv.org/abs/0707.4535v2

Phys. Rev. Lett. 99, 236404 (2007)

Physics

Condensed Matter

Strongly Correlated Electrons

4 pages, 4 eps figures, revised version, to appear in Phys. Rev. Lett

Scientific paper

10.1103/PhysRevLett.99.236404

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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