Doping Evolution of Oxygen K-edge X-ray Absorption Spectra in Cuprate Superconductors

Abstract

We study oxygen K-edge x-ray absorption spectroscopy (XAS) and investigate the validity of the Zhang-Rice singlet (ZRS) picture in overdoped cuprate superconductors. Using large-scale exact diagonalization of the three-orbital Hubbard model, we observe the effect of strong correlations manifesting in a dynamical spectral weight transfer from the upper Hubbard band to the ZRS band. The quantitative agreement between theory and experiment highlights an additional spectral weight reshuffling due to core-hole interaction. Our results confirm the important correlated nature of the cuprates and elucidate the changing orbital character of the low-energy quasi-particles, but also demonstrate the continued relevance of the ZRS even in the overdoped region.

Original: 5 pages, 4 figures. Replaced: 6 pages and 4 figures, with updated title and content

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Cited by in corpus (21)

• Efficient implementation of core-excitation Bethe Salpeter equation calculations
• Accurate X-Ray Absorption Predictions for Transition Metal Oxides: An Advanced Self-Consistent-Field Approach Inspired by Many-Body Perturbation Theory
• Characterizing the three-orbital Hubbard model with determinant quantum Monte Carlo
• Ultrafast renormalization of the onsite Coulomb repulsion in a cuprate superconductor
• Intrinsic arrested nanoscale phase separation near a topological Lifshitz transition in strongly correlated two-band metals
• Acoustic plasmons and conducting carriers in hole-doped cuprate superconductors
• Generic character of charge and spin density waves in superconducting cuprates
• Light-induced d-wave superconductivity through Floquet-engineered Fermi surfaces in cuprates
• Evolution of plasmon excitations across the phase diagram of the cuprate superconductor La${}_{2-x}$Sr${}_x$CuO${}_4$
• Metal-insulator transition in the ground-state of the three-band Hubbard model at half-filling
• Role of Oxygen States in the Low Valence Nickelate La${}_4$Ni${}_3$O${}_8$
• Numerical exploration of spontaneous broken symmetries in multi-orbital Hubbard models
• Doping evolution of Zhang-Rice singlet spectral weight: a comprehensive examination by x-ray absorption spectroscopy
• Probing inter- and intrachain Zhang-Rice excitons in Li${}_2$CuO${}_2$ and determining their binding energy
• Exciton dynamics uncovering electron fractionalization in superconducting cuprates
• Taming Convergence in the Determinant Approach for X-Ray Excitation Spectra
• Magnon Splitting Induced by Charge Transfer in the Three-Orbital Hubbard Model
• Cluster dynamical mean field study of intra-unit-cell charge nematicity in hole-doped cuprates
• Numerical study of resonant inelastic X-ray scattering at the oxygen $K$-edge in insulating cuprates
• Oxygen hole content, charge-transfer gap, covalency, and cuprate superconductivity
• Interfacial Strain Modulated Correlated Plasmons in La1.85Sr0.15CuO4 and Their Role in High-temperature Superconductivity