Enhanced charge excitations in electron-doped cuprates by resonant inelastic x-ray scattering

Abstract

Resonant inelastic x-ray scattering (RIXS) tuned for the Cu L edge is a possible tool to detect charge excitations in cuprate superconductors. We theoretically investigate the possibility for observing a collective charge excitation by the RIXS. The RIXS process via the intermediate state inevitably makes the spectral weight of charge excitation stronger in electron doping than in hole doping. Electron-hole asymmetry also appears in the dynamical charge structure factor, showing a new enhanced small-momentum low-energy mode in electron doping. These facts indicate a possibility of detecting the new charge mode by RIXS in electron-doped systems.

8 pages, 7 figures, to appear in Phys. Rev. B

References in corpus (11)

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• Momentum Dependence of Charge Excitations in the Electron-Doped Superconductor Nd1.85Ce0.15CuO4: a RIXS Study
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• Coexisting pseudogap, charge transfer gap, and Mott gap energy scales in the resonant inelastic x-ray scattering spectra of electron-doped cuprates

Cited by in corpus (14)

• Ground state phase diagram of the triangular lattice Hubbard model by density matrix renormalization group method
• Using RIXS to uncover elementary charge and spin excitations in correlated materials
• Doping evolution of the charge excitations and electron correlations in electron-doped superconducting La${}_{2-x}$Ce${}_x$CuO${}_4$
• Computing Resonant Inelastic X-Ray Scattering Spectra Using The Density Matrix Renormalization Group Method
• Photoinduced absorptions inside the Mott gap in the two-dimensional extended Hubbard model
• Incident-energy-dependent spectral weight of resonant inelastic x-ray scattering in doped cuprates
• Reciprocity between local moments and collective magnetic excitations in the phase diagram of BaFe${}_2$(As${}_{1-x}$P${}_x$)${}_2$
• Dynamical DMRG study of spin and charge excitations in the four-leg t-t'-J ladder
• Spectral Weight of Resonant Inelastic X-Ray Scattering in Doped Cuprates: Effect of Core-Hole Lifetime
• Charge-Density-Excitation Spectrum in the t-t'-J-V Model
• Orbital breathing effects in the computation of x-ray d-ion spectra in solids by ab initio wave-function-based methods
• Beyond on-site Hubbard interaction in charge dynamics of cuprate superconductors
• Theory of dispersive optical phonons in resonant inelastic x-ray scattering experiments
• Theoretical perspectives on charge dynamics in high-temperature cuprate superconductors