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

Abstract

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.

12 pages, 12 figures

References in corpus (4)

• Orbital selective Mott transition in multi-band systems: slave-spin representation and dynamical mean-field theory
• Dynamical behavior across the Mott transition of two bands with different bandwidths
• Orbital-selective Mott transitions in the anisotropic two-band Hubbard model at finite temperatures
• The Mott insulator - 10th order perturbation theory extended to infinite order using QMC