Pseudogap and Mott Transition Studied by Cellular Dynamical Mean Field Theory

Abstract

We study metal-insulator transitions between Mott insulators and metals. The transition mechanism completely different from the original dynamical mean field theory (DMFT) emerges from a cluster extension of it. A consistent picture suggests that the quasiparticle weight $Z$ remains nonzero through metals and suddenly jumps to zero at the transition, while the gap opens continuously in the insulators. This is in contrast with the original DMFT, where $Z$ continuously vanishes but the gap opens discontinuously. The present results arising from electron differentiation in momentum space agree with recent puzzling bulk-sensitive experiments on CaVO${}_3$ and SrVO${}_3$.

5 pages, 4 figures

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Cited by in corpus (68)

• The Hubbard model: A computational perspective
• Cluster Dynamical Mean Field Theory of the Mott Transition
• Evolution of electronic structure of doped Mott insulators - reconstruction of poles and zeros of Green's function
• Pseudogap opening and formation of Fermi arcs as an orbital-selective Mott transition in momentum space
• Electronic Structure Calculation by First Principles for Strongly Correlated Electron Systems
• Sum-rules and bath-parametrization for quantum cluster theories
• Local Order and the gapped phase of the Hubbard model: a plaquette dynamical mean field investigation
• Combined GW and dynamical mean field theory: Dynamical screening effects in transition metal oxides
• Asymmetric band widening by screened exchange competing with local correlations in SrVO3: new surprises on an old compound from combined GW and dynamical mean field theory GW+DMFT
• Mott physics and spin fluctuations: a functional viewpoint
• First order Mott transition at zero temperature in two dimensions: Variational plaquette study
• Effective Onsite Interaction for Dynamical Mean-Field Theory
• Stripes, Antiferromagnetism, and the Pseudogap in the Doped Hubbard Model at Finite Temperature
• Physics of the Pseudogap in 8-site Cluster Dynamical Mean Field Theory: photoemission, Raman scattering, in-plane and c-axis conductivity
• Practical consequences of Luttinger-Ward functional multivaluedness for cluster DMFT methods
• Low energy theory of the t-t'-t''-U Hubbard Model at half-filling: interaction strengths in cuprate superconductors and an effective spin-only description of La_2CuO_4
• Dynamical Mean Field Study of the Two-Dimensional Disordered Hubbard Model
• Multisite versus multiorbital Coulomb correlations studied within finite-temperature exact diagonalization dynamical mean-field theory
• Mott transition in two-dimensional frustrated compounds
• Spectral properties of the three-dimensional Hubbard model
• Quantum phase transition in the two-band Hubbard model
• Correlation-driven Lifshitz transition at the emergence of the pseudogap phase in the two-dimensional Hubbard model
• Multi-orbital cluster dynamical mean-field theory with an improved continuous-time quantum Monte Carlo algorithm
• Correlated Dirac Fermions on the Honeycomb Lattice studied within Cluster Dynamical Mean Field Theory
• Cofermion Theory for Pseudogap Phenomena and Superconducting Mechanism of Underdoped Cuprate Superconductors
• Unconventional quantum criticality emerging as a new common language of transition-metal compounds, heavy-fermion systems, and organic conductors
• Strong Correlations in a nutshell
• Mottness on a triangular lattice
• Dynamical cluster approximation within an augmented plane-wave framework: Spectral properties of SrVO${}_3$
• Chirality-driven mass enhancement in the kagome Hubbard model
• Hidden-Fermion Representation of Self-energy in Pseudogap and Superconducting States of Two-Dimensional Hubbard Model
• Dynamical cluster approximation study of the anisotropic two-orbital Hubbard model
• Dipole matrix element approach vs. Peierls approximation for optical conductivity
• Holographic Spectral Functions with Momentum Relaxation
• Second-order dual fermion approach to the Mott transition in the two-dimensional Hubbard model
• Direct Connection between Mott Insulator and d-Wave High-Temperature Superconductor Revealed by Continuous Evolution of Self-Energy Poles
• Variational Monte Carlo Study of Electron Differentiation around Mott Transition
• Excitons and Dark Fermions as Origins of Mott Gap, Pseudogap and Superconductivity in Cuprate Superconductors --- General Idea and Basic Concept Based on Gap Physics
• Competition between band and Mott insulator in the bilayer Hubbard model: a dynamical cluster approximation study
• Extended Metal-Insulator Crossover with Strong Antiferromagnetic Spin Correlation in Half-Filled 3D Hubbard Model
• Mott transition with Holographic Spectral function
• On the universality class of the Mott transition in two dimensions
• Orbital selective phase transition induced by different magnetic states: A dynamical cluster approximation study
• Origin of the Mott Gap
• Validity of the Local Approximation in Iron- Pnictides and Chalcogenides
• Mott Transition in Quasi-One-Dimensional Systems
• Spatial fluctuations of spin and orbital in two-orbital Hubbard model
• Orbital Selective Mott Transition Induced by Orbitals with Distinct Noninteracting Densities of States
• The metal insulator transition in cluster dynamical mean field theory: intersite correlation, cluster size, interaction strength, and the location of the transition line
• Non-local Correlation Effects in Fermionic Many-Body Systems: Overcoming the Non-causality Problem
• Metal-insulator transition in half-filling two-orbital Hubbard model on triangular lattice
• Local moments versus itinerant antiferromagnetism: magnetic phase diagram and spectral properties of the anisotropic square lattice Hubbard model
• Orbital Selective Phase Transition
• Dynamic charge Kondo effect and a slave fermion approach to the Mott transition
• Inclusion of intersite spatial correlations in the alloy analogy approach to the half-filled ionic Hubbard model
• Semiclassical approximation solved by Monte Carlo as an efficient impurity solver for dynamical mean field theory and its cluster extensions
• Comparing scattering rates from Boltzmann and dynamical mean-field theory
• Fine structure of the spectra of the Kondo lattice model: two-site cellular DMFT study
• Distinct Nature of Orbital Selective Mott Phases Dominated by the Low-energy Local Spin Fluctuations
• Orbitally-selective Breakdown of the Fermi Liquid and Simultaneous Enhancement of Metallic and Insulating States in Correlated Multi-band Systems with Spin-orbit Coupling
• Effects of correlations on honeycomb lattice in ionic-Hubbard Model
• Electronic and magnetic properties of metallic phases under coexisting short-range interaction and diagonal disorder
• Real-space renormalized dynamical mean field theory
• Strong-coupling Superconductivity in the Cuprate Oxide
• Anisotropic two-orbital Hubbard model: single-site versus cluster dynamical mean-field theory
• Bath parameterization in multi-band cluster Dynamical Mean-Field Theory
• Slope-Reversed Mott Transition in Multiorbital Systems
• Non-perturbative effects of short-range spatial correlations at the two-particle level