Electron self-energy from quantum charge fluctuations in the layered t-J model with long-range Coulomb interaction

Abstract

Employing a large-N scheme of the layered t-J model with the long-range Coulomb interaction, which captures fine details of the charge excitation spectra recently observed in cuprate superconductors, we explore the role of the charge fluctuations on the electron self-energy. We fix temperature at zero and focus on quantum charge fluctuations. We find a pronounced asymmetry of the imaginary part of the self-energy Im$\Sigma (\mathbf{k},\omega )$ with respect to $\omega =0$, which is driven by strong electron correlation effects. The quasiparticle weight is reduced dramatically, which occurs almost isotropically along the Fermi surface. Concomitantly an incoherent band and a sharp side band are newly generated and acquire sizable spectral weight. All these features are driven by usual on-site charge fluctuations, which are realized in a rather high-energy region and yield plasmon excitations. On the other hand, the low-energy region with the scale of the superexchange interaction J is dominated by bond-charge fluctuations. Surprisingly, compared with the effect of the on-site charge fluctuations, their effect on the electron self-energy is much weaker even if the system approaches close to bond-charge instabilities. Furthermore, quantum charge dynamics does not produce a clear kink nor a pseudogap in the electron dispersion.

49 pages, 17 figures

References in corpus (27)

• Direct observation of competition between superconductivity and charge density wave order in YBa2Cu3Oy
• Distinct Charge Orders in the Planes and Chains of Ortho-III-Ordered YBa${}_2$Cu${}_3$O${}_{6+\delta }$ Superconductors Identified by Resonant Elastic X-ray Scattering
• Charge ordering in the electron-doped superconductor Nd2-xCexCuO4
• 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
• Instability toward Formation of Quasi-One-Dimensional Fermi Surface in Two-Dimensional t-J Model
• Possible Quasi-One-Dimensional Fermi Surface in La_{2-x}Sr_{x}CuO_4
• High-energy kink in high-temperature superconductors
• The hierarchy of multiple many-body interaction scales in high-temperature superconductors
• High-energy spin and charge excitations in electron-doped copper oxide superconductors
• High-energy scale revival and giant kink in the dispersion of a cuprate superconductor
• "Waterfalls" phenomenon in superconducting cuprates
• "Waterfalls" in cuprates
• High energy kink in the single particle spectra of the two-dimensional Hubbard model
• Charge Order in the Pseudogap Phase of Cuprate Superconductors
• Doping dependent charge order correlations in electron-doped cuprates
• Bond order instabilities in a correlated two-dimensional metal
• Momentum Dependence of Charge Excitations in the Electron-Doped Superconductor Nd1.85Ce0.15CuO4: a RIXS Study
• String excitations of a hole in a quantum antiferromagnet and photoelectron spectrospopy
• High Energy Dispersions in Bi2Sr2CaCu2O8 High Temperature Superconductor from Laser-Based Angle-Resolved Photoemission
• Paramagnon-induced dispersion anomalies in the cuprates
• Temperature and doping dependence of high-energy kink in cuprates
• Two-mode variational Monte Carlo study of Quasiparticle excitations in cuprates
• Dual structure in the charge excitation spectrum of electron-doped cuprates
• One-electron self energies and spectral functions for the t-J model in the large-N limit
• Charge-Density-Excitation Spectrum in the t-t'-J-V Model
• Role of dynamical non-double-occupancy excitations on the quasiparticle damping of the $t-J$ model in the large-$N$ limit

Cited by in corpus (10)

• Low-energy quasi-circular electron correlations with charge order wavelength in ${\text{Bi}}_2{\text{Sr}}_2\text{Ca}{\text{Cu}}_2{\text{O}}_{8+\delta }$
• Out-of-plane bond-order phase, superconductivity, and their competition in the $t$-$J_{\parallel }$-$J_{\perp }$ model: Possible implications for bilayer nickelates
• Impact of electron correlations on two-particle charge response in electron- and hole-doped cuprates
• Plasmarons in high-temperature cuprate superconductors
• Strong-coupling theory of bilayer plasmon excitations
• Dynamic charge order from strong correlations in the cuprates
• Retaining Landau quasiparticles in the presence of realistic charge fluctuations in cuprates
• Theoretical perspectives on charge dynamics in high-temperature cuprate superconductors
• Beyond on-site Hubbard interaction in charge dynamics of cuprate superconductors
• Non-Fermi Liquid Behavior of the $t$-$J$ Model in the Strange Metal Phase: $U(1)$ Gauge Theory Consistent with Local Constraints