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.
@article{arxiv.0707.4535,
title = {Quantum phase transition in the two-band Hubbard model},
author = {T. A. Costi and A. Liebsch},
journal= {arXiv preprint arXiv:0707.4535},
year = {2011}
}
Comments
4 pages, 4 eps figures, revised version, to appear in Phys. Rev. Lett