Dynamical spin susceptibility in La2CuO4 studied by resonant inelastic x-ray scattering

Abstract

Resonant inelastic X-ray scattering (RIXS) is a powerful probe of elementary excitations in solids. It is now widely applied to study magnetic excitations. However, its complex cross-section means that RIXS has been more difficult to interpret than inelastic neutron scattering (INS). Here we report high-resolution RIXS measurements of magnetic excitations of La2CuO4, the antiferromagnetic parent of one system of high-temperature superconductors. At high energies (~2 eV), the RIXS spectra show angular-dependent dd orbital excitations which are found to be in good agreement with single-site multiplet calculations. At lower energies (<0.3 eV), we show that the wavevector-dependent RIXS intensities are proportional to the product of the single-ion spin-flip cross section and the dynamical susceptibility of the spin-wave excitations. When the spin-flip crosssection is dividing out, the RIXS magnon intensities show a remarkable resemblance to INS data. Our results show that RIXS is a quantitative probe the dynamical spin susceptibility in cuprate and therefore should be used for quantitative investigation of other correlated electron materials.

12 pages

References in corpus (14)

• Anomalous High-Energy Spin Excitations in La2CuO4
• Broken translational and rotational symmetry via charge stripe order in underdoped YBCO
• Spin excitations in a single La${}_2$CuO${}_4$ layer
• High-energy magnetic excitations in Bi${}_2$Sr${}_2$CaCu${}_2$O${}_{8+\delta }$: Towards a unified description of the electronic and magnetic degrees of freedom in the cuprates
• The Persistence of High-Frequency Spin Fluctuations in Overdoped La${}_{2-x}$Sr${}_x$CuO${}_4$ ($x$=0.22)
• Insights into the High Temperature Superconducting Cuprates from Resonant Inelastic X-ray Scattering
• Polarization resolved Cu $L_3$-edge resonant inelastic x-ray scattering of orbital and spin excitations in NdBa${}_2$Cu${}_3$O${}_{7-\delta }$
• Spin and orbital degrees of freedom in transition metal oxides and oxide thin films studied by soft x-ray absorption spectroscopy
• Doping dependence of the magnetic excitations in La${}_{2-x}$Sr${}_x$CuO${}_4$
• Crossover from Collective to Incoherent Spin Excitations in Superconducting Cuprates Probed by Detuned Resonant Inelastic X-ray Scattering
• High-energy magnetic excitations in overdoped La${}_{2-x}$Sr${}_x$CuO${}_4$ studied by neutron and resonant inelastic X-ray scattering
• Multiple-magnon excitations shape the spin spectrum of cuprate parent compounds
• Resolving the nature of electronic excitations in resonant inelastic x-ray scattering
• Non-perturbative series expansion of Green's functions: The Anatomy of Resonant Inelastic X-Ray Scattering in Doped Hubbard Model

Cited by in corpus (14)

• Superconductivity in high-$T_c$ and related strongly correlated systems from variational perspective: Beyond mean field theory
• Witnessing Light-Driven Entanglement using Time-Resolved Resonant Inelastic X-Ray Scattering
• Unraveling higher-order corrections in the spin dynamics of RIXS spectra
• Novel magnetic excitations beyond the single- and double-magnons
• Investigation of spin excitations and charge order in bulk crystals of the infinite-layer nickelate LaNiO${}_2$
• Observing Differential Spin Currents by Resonant Inelastic X-ray Scattering
• Crossover from Fermi Arc to Full Fermi Surface
• Magnon Spectra of Cuprates beyond Spin Wave Theory
• Detection of a two-phonon mode in a cuprate superconductor via polarimetric RIXS
• Theoretical analysis of multi-magnon excitations in resonant inelastic x-ray scattering spectra of two-dimensional antiferromagnets
• Circular dichroism in resonant inelastic x-ray scattering from birefringence in CuO
• Bimagnon dispersion of La2CuO4 probed by resonant inelastic X-ray scattering
• Electron-hole asymmetry of quantum collective excitations in high-$T_c$ copper oxides
• Multimagnon and multispinon $L_3$-edge RIXS spectra of an effective ${\tilde{J}}_1-{\tilde{J}}_2-{\tilde{J}}_3$ square lattice Heisenberg model