Two-mode variational Monte Carlo study of Quasiparticle excitations in cuprates

Abstract

Recent measurements of quasiparticles in hole-doped cuprates reveal highly unusual features: 1) the doping-independent Fermi velocity, 2) two energy scales in the quasiparticle spectral function, and 3) a suppression of the low energy spectral weight near the zone center. The underlying mechanism is under hot debate. We addressed these important issues by a novel two-mode variational Monte Carlo (VMC) study of the t-J model. We obtained results in agreement with the experiments but without invoking extrinsic effects. Besides, we resolved a long standing issue of the sum rule for quasiparticle spectral weights in VMC studies. The electron doped case was also discussed.

4+ pages, two-column revtex, 3 figures, polished version

References in corpus (31)

• Evidence for ubiquitous strong electron-phonon coupling in high-temperature superconductors
• Projected Wavefunctions and High Temperature Superconductivity
• Coupling Of The B1g Phonon To The Anti-Nodal Electronic States of Bi2Sr2Ca0.92Y0.08Cu2O(8+delta)
• A universal high energy anomaly in angle resolved photoemission spectra of high temperature superconductors - possible evidence of spinon and holon branches
• Kinks in the dispersion of strongly correlated electrons
• High Tc Superconductors -- A Variational Theory of the Superconducting State
• High-energy kink in high-temperature superconductors
• The hierarchy of multiple many-body interaction scales in high-temperature superconductors
• Anomalous high energy dispersion in photoemission spectra from insulating cuprates
• High-energy scale revival and giant kink in the dispersion of a cuprate superconductor
• "Waterfalls" phenomenon in superconducting cuprates
• "Waterfalls" in cuprates
• Momentum and excitation energy dependence of the "waterfalls" in cuprates
• High energy kink in the single particle spectra of the two-dimensional Hubbard model
• Particle-Hole Asymmetry in Doped Mott Insulators: Implications for Tunneling and Photoemission Spectroscopies
• Theory for Slightly Doped Antiferromagnetic Mott Insulators
• When low- and high-energy electronic responses meet in cuprate superconductors
• Hidden Charge 2e Boson in Doped Mott Insulators: Field Theory of Mottness
• Antiferromagnetism and phase separation in the t-J model at low doping: a variational study
• Low energy physical properties of high-Tc superconducting Cu oxides: A comparison between the resonating valence bond and experiments
• Electronic structure of strongly correlated d-wave superconductors
• Theory of high energy features in angle-resolved photo-emission spectra of hole-doped cuprates
• Role of strong correlation in the recent ARPES experiments for cuprate superconductors
• A Variational Monte Carlo Study of the Current Carried by a Quasiparticle
• Staggered-flux normal state in the weakly doped t-J model
• Spectral Weights, d-wave Pairing Amplitudes, and Particle-hole Tunneling Asymmetry of a Strongly Correlated Superconductor
• Coherent Inverse Photoemission Spectrum for Gutzwiller Projected Superconductors
• Quasiparticle spectral weights of Gutzwiller-projected high T_c superconductors
• One-Particle Anomalous Excitations of Gutzwiller Projected BCS Superconductors and Bogoliubov Quasi-Particle Characteristics
• On the Origin of the Tunneling Asymmetry in the Cuprate Superconductors: a variational perspective
• Low-energy spectra in the t-J type models at light doping

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• Doping Evolution of Oxygen K-edge X-ray Absorption Spectra in Cuprate Superconductors
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• Single-particle spectral function formulated and calculated by variational Monte Carlo method with application to $d$-wave superconducting state
• Fermi Arcs From Dynamical Variational Monte Carlo
• A computational approach to a doped antiferromagnet: correlations between two spin-polarons in the lightly doped CuO${}_2$ plane
• Evidence for Multiple Underlying Fermi Surface and Isotropic Energy Gap in the Cuprate Parent Compound Ca${}_2$CuO${}_2$Cl${}_2$
• Electron self-energy from quantum charge fluctuations in the layered t-J model with long-range Coulomb interaction
• Doping and temperature dependence of the pseudogap and Fermi arcs in cuprates from $d$-CDW short-range fluctuations in the context of the t-J model
• A Fast Impurity Solver Based on Gutzwiller variational approach
• Superconductivity, pair density wave, and Neel order in cuprates
• Role of dynamical non-double-occupancy excitations on the quasiparticle damping of the $t-J$ model in the large-$N$ limit
• SU(2) approach to the pseudogap phase of high-temperature superconductors: electronic spectral functions
• Dynamical Variational Monte Carlo as a quantum impurity solver: Application to Cluster Dynamical Mean-Field Theory
• Low-lying quasiparticle excitations in strongly-correlated superconductors: An ansatz from BCS quasiparticle excitations?
• Variational Monte Carlo study of spin dynamics in underdoped cuprates