Observation of a dispersive charge mode in hole-doped cuprates using resonant inelastic x-ray scattering at the oxygen K edge

Abstract

We investigate electronic excitations in La2-x(Br,Sr)xCuO4 using resonant inelastic x-ray scattering (RIXS) at the oxygen K edge. RIXS spectra of the hole-doped cuprates show clear momentum dependence below 1 eV. The spectral weight exhibits positive dispersion and shifts to higher energy with increasing hole concentration. Theoretical calculation of the dynamical charge structure factor on oxygen orbitals in a three-band Hubbard model is consistent with the experimental observation of the momentum and doping dependence, and therefore the dispersive mode is ascribed to intraband charge excitations which have been observed in electron-doped cuprates.

arXiv comment6 pages, 3 figures

References in corpus (24)

• Long-range incommensurate charge fluctuations in (Y,Nd)Ba2Cu3O(6+x)
• Resonant x-ray scattering studies of charge order in cuprates
• Stripe order, depinning, and fluctuations in La${}_{1.875}$Ba${}_{0.125}$CuO${}_4$ and La${}_{1.875}$Ba${}_{0.075}$Sr${}_{0.050}$CuO${}_4$
• Persistence of magnetic excitations in La2-xSrxCuO4 from the undoped insulator to the heavily overdoped non-superconducting metal
• Resonant X-rays at the Cu L-edge as a momentum dependent probe of the magnetic excitation spectrum in cuprates
• Competition between charge/spin-density-wave orders and superconductivity in La${}_{1.875}$Ba${}_{0.125-x}$Sr${}_x$CuO${}_4$
• Asymmetry of collective excitations in electron and hole doped cuprate superconductors
• High-energy spin and charge excitations in electron-doped copper oxide superconductors
• Momentum Dependence of Charge Excitations in the Electron-Doped Superconductor Nd1.85Ce0.15CuO4: a RIXS Study
• Doping Dependence of the Pseudogap in La(2-x)Sr(x)CuO(4)
• Bimagnon studies in cuprates with Resonant Inelastic X-ray Scattering at the O K edge. I - An assessment on La2CuO4 and a comparison with the excitation at Cu L3 and Cu K edges
• Magnetic Excitations in La2CuO4 probed by Indirect Resonant Inelastic X-ray Scattering
• Using RIXS to uncover elementary charge and spin excitations in correlated materials
• Charge order, metallic behavior and superconductivity in La_{2-x}Ba_xCuO_4 with x=1/8
• Plasmon excitations in layered high-Tc cuprates
• A resonant inelastic x-ray scattering study of the spin and charge excitations in the overdoped superconductor La1.77Sr0.23CuO4
• Doping dependence of charge-transfer excitations in La_{2-x}Sr_xCuO_4
• High-energy magnetic excitations in overdoped La${}_{2-x}$Sr${}_x$CuO${}_4$ studied by neutron and resonant inelastic X-ray scattering
• Magnetic excitations in stripe-ordered La${}_{1.875}$Ba${}_{0.125}$CuO${}_4$ studied using resonant inelastic x-ray scattering
• Doping-Dependent Raman Resonance in the Model High-Temperature Superconductor HgBa2CuO4+d
• Bimagnon studies in cuprates with Resonant Inelastic X-ray Scattering at the O K edge. II - The doping effect in La2-xSrxCuO4
• Density matrix renormalization group study of optical conductivity in the one-dimensional Mott insulator Sr_2CuO_3
• Incident-energy-dependent spectral weight of resonant inelastic x-ray scattering in doped cuprates
• Resonant inelastic X-ray scattering study of intra-band charge excitations in hole-doped high-Tc cuprates

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• Theoretical insights into electronic nematic order, bond-charge orders, and plasmons in cuprate superconductors
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• Electron-hole asymmetry of quantum collective excitations in high-$T_c$ copper oxides
• Theoretical perspectives on charge dynamics in high-temperature cuprate superconductors
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