Retaining Landau quasiparticles in the presence of realistic charge fluctuations in cuprates

Abstract

Charge excitation spectra are getting clear in cuprate superconductors in momentum-energy space especially around a small momentum region, where plasmon excitations become dominant. Here, we study whether Landau quasiparticles survive in the presence of charge fluctuations observed in experiments. We employ the layered t-J model with the long-range Coulomb interaction, which can reproduce the realistic charge fluctuations. We find that Landau quasiparticles are retained in a realistic temperature and doping region, although the quasiparticle spectral weight is strongly reduced to 0.08-0.24. Counterintuitively, the presence of this small quasiparticle weight does not work favorably to generate a pseudogap.

21 pages, 7 figures

References in corpus (18)

• A Phenomenological Theory of The Pseudogap State
• Tracking the Footprints of Spin Fluctuations: A MultiMethod, MultiMessenger Study of the Two-Dimensional Hubbard Model
• The ground state of heavily-overdoped non-superconducting La${}_{2-x}$Sr${}_x$CuO${}_4$
• Protected nodes and the collapse of the Fermi arcs in high Tc cuprates
• Modeling the Fermi arc in underdoped cuprates
• Fluctuation diagnostics of the electron self-energy: Origin of the pseudogap physics
• Linear-in temperature resistivity from an isotropic Planckian scattering rate
• Correlation between $T_c$ and anisotropic scattering in Tl${}_2$Ba${}_2$CuO${}_{6+\delta }$
• Detection of Acoustic Plasmons in Hole-Doped Lanthanum and Bismuth Cuprate Superconductors Using Resonant Inelastic X-Ray Scattering
• Acoustic plasmons and conducting carriers in hole-doped cuprate superconductors
• Signature of quantum criticality in cuprates by charge density fluctuations
• Gapped collective charge excitations and interlayer hopping in cuprate superconductors
• Close inspection of plasmon excitations in cuprate superconductors
• Dual structure in the charge excitation spectrum of electron-doped cuprates
• Electron self-energy from quantum charge fluctuations in the layered t-J model with long-range Coulomb interaction
• Revised phase diagram of the high-$T_c$ cuprate superconductor Pb-doped Bi${}_2$Sr${}_2$CaCu${}_2$O${}_{8+\delta }$ revealed by anisotropic transport measurements
• Pseudogap Suppression by Competition with Superconductivity in La-Based Cuprates
• Plasmarons in high-temperature cuprate superconductors

Cited by in corpus (2)

• Beyond on-site Hubbard interaction in charge dynamics of cuprate superconductors
• Theoretical perspectives on charge dynamics in high-temperature cuprate superconductors