Finite doping signatures of the Mott transition in the two-dimensional Hubbard model

Abstract

Experiments on layered materials call for a study of the influence of short-range spin correlations on the Mott transition. To this end, we solve the cluster dynamical mean-field equations for the Hubbard model on a plaquette with continuous-time quantum Monte Carlo. The normal state phase diagram as a function of temperature $T$, interaction strength $U$ and filling $n$ reveals that upon increasing $n$ towards the insulator, there is a surface of first-order transition between two metals at non-zero doping. For $T$ above the critical end line there is a maximum in scattering rate.

5 pages, 3 figures, LaTeX

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• Energetics of superconductivity in the two dimensional Hubbard model
• Physics of the Pseudogap in 8-site Cluster Dynamical Mean Field Theory: photoemission, Raman scattering, in-plane and c-axis conductivity
• Intermediate Coupling Model of the Cuprates
• c-axis resistivity, pseudogap, superconductivity and Widom line in doped Mott insulators
• The Fierz convergence criterion: a controlled approach to strongly-interacting systems with small embedded clusters
• Spectral properties of the three-dimensional Hubbard model
• Quasiparticle Properties of the Superconducting State of the Two Dimensional Hubbard Model
• The underdoped cuprates as fractionalized Fermi liquids: transition to superconductivity
• Phase separation in doped Mott insulators
• Effects of interaction strength, doping, and frustration on the antiferromagnetic phase of the two-dimensional Hubbard model
• Critical Opalescence across the Doping Driven Mott Transition in Optical Lattices of Ultracold Atoms
• Pseudogap transition within the superconducting phase in the three-band Hubbard model
• Stripes and electronic quasiparticles in the pseudogap state of cuprate superconductors
• Surface effects in doping a Mott insulator
• Superconductivity in the two-dimensional Hubbard model with cellular dynamical mean-field theory: a quantum impurity model analysis