Orbital-selective Mott Transitions in a Doped Two-band Hubbard Model

Details Orbital-selective Mott Transitions in a Doped Two-band Hubbard Model Orbital-selective Mott Transitions in a Doped Two-band Hubbard Model

2009-06-16

arxiv.org/abs/0906.2966v2

Phys. Rev. B 80, 115109 (2009)

Physics

Condensed Matter

Strongly Correlated Electrons

12 pages, 12 figures

Scientific paper

10.1103/PhysRevB.80.115109

We extend previous studies on orbital-selective Mott transitions in the paramagnetic state of the half-filled degenerate two-band Hubbard model to the general doped case, using a high-precision quantum Monte Carlo dynamical mean-field theory solver. For sufficiently strong interactions, orbital-selective Mott transitions as a function of total band filling are clearly visible in the band-specific fillings, quasiparticle weights, double occupancies, and spectra. The results are contrasted with those of single-band models for similar correlation strengths.

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