Orbital-selective Mott transitions in the degenerate Hubbard model
Strongly Correlated Electrons
2009-11-10 v1
Abstract
We investigate the Mott transitions in two-band Hubbard models with different bandwidths. Applying dynamical mean field theory, we discuss the stability of itinerant quasi-particle states in each band. We demonstrate that separate Mott transitions occur at different Coulomb interaction strengths in general, which merge to a single transition only under special conditions. This kind of behavior may be relevant for the physics of the single-layer ruthenates, CaSrRuO.
Cite
@article{arxiv.cond-mat/0401223,
title = {Orbital-selective Mott transitions in the degenerate Hubbard model},
author = {Akihisa Koga and Norio Kawakami and T. M. Rice and Manfred Sigrist},
journal= {arXiv preprint arXiv:cond-mat/0401223},
year = {2009}
}
Comments
4 pages, 4 figures