Multiple-magnon excitations shape the spin spectrum of cuprate parent compounds

Abstract

Thanks to high resolution and polarization analysis, resonant inelastic x-ray scattering (RIXS) magnetic spectra of La2CuO4, Sr2CuO2Cl2 and CaCuO2 reveal a rich set of properties of the spin 1/2 antiferromagnetic square lattice of cuprates. The leading single-magnon peak energy dispersion is in excellent agreement with the corresponding inelastic neutron scattering measurements. However, the RIXS data unveil an asymmetric lineshape possibly due to odd higher order terms. Moreover, a sharp bimagnon feature emerges from the continuum at (1/2,0), coincident in energy with the bimagnon peak detected in optical spectroscopy. These findings show that the inherently complex spin spectra of cuprates, an exquisite manifestation of quantum magnetism, can be effectively explored by exploiting the richness of RIXS cross sections.

arXiv comment7 pages, 3 figures

References in corpus (44)

• A Common Thread: the pairing interaction for the unconventional superconductors
• Resonant Inelastic X-ray Scattering Studies of Elementary Excitations
• Band-structure trend in hole-doped cuprates and correlation with Tcmax
• Spin waves and electronic interactions in La2CuO4
• The Physics Behind High-Temperature Superconducting Cuprates: The "Plain Vanilla" Version Of RVB
• Isospin Dynamics in Sr2IrO4 : Forging Links to Cuprate Superconductivity
• Intense paramagnon excitations in a large family of high-temperature superconductors
• Persistence of magnetic excitations in La2-xSrxCuO4 from the undoped insulator to the heavily overdoped non-superconducting metal
• Anomalous High-Energy Spin Excitations in La2CuO4
• Resonant X-rays at the Cu L-edge as a momentum dependent probe of the magnetic excitation spectrum in cuprates
• Phonon Assisted Multimagnon Optical Absorption and Long Lived Two-Magnon States in Undoped Lamellar Copper Oxides
• Spin excitations in a single La${}_2$CuO${}_4$ layer
• Influence of apical oxygen on the extent of in-plane exchange interaction in cuprate superconductors
• Quantum dynamics and entanglement of spins on a square lattice
• Nearly deconfined spinon excitations in the square-lattice spin-1/2 Heisenberg antiferromagnet
• Measurement of magnetic excitations in the two-dimensional antiferromagnetic Sr2CuO2Cl2 insulator using resonant x-ray scattering:Evidence for extended interactions
• High-energy magnon dispersion and multi-magnon continuum in the two-dimensional Heisenberg antiferromagnet
• Where is the spectral weight in magnetic neutron scattering in the cuprates?
• Theory of Phonon-Assisted Multimagnon Optical Absorption and Bimagnon States in Quantum Antiferromagnets
• Quantum Lattice Model Solver $\mathcal{H}\Phi$
• Nature of Spin Excitations in Two-dimensional Mott Insulators: Undoped Cuprates and Other Materials
• Does the Heisenberg model describe the multimagnon spin dynamics in antiferromagnetic CuO layers ?
• 1/S-expansion study of spin waves in a two-dimensional Heisenberg antiferromagnet
• Using RIXS to uncover elementary charge and spin excitations in correlated materials
• Dispersion, damping, and intensity of spin excitations in the single-layer (Bi,Pb)${}_2$(Sr,La)${}_2$CuO${}_{6+\delta }$ cuprate superconductor family
• A magnetic analog of the isotope effect in cuprates
• Strain-Engineering Mott-Insulating La${}_2$CuO${}_4$
• Unified quantitative model for magnetic and electronic spectra of the undoped cuprates
• The simultaneous measurement of energy and linear polarization of the scattered radiation in resonant inelastic soft 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${}_{7-\delta }$
• High Tc superconductivity at the interface between the CaCuO2 and SrTiO3 insulating oxides
• Observation of spin-orbit excitations and Hund's multiplets in Ca${}_2$RuO${}_4$
• Quantum effects in a weakly-frustrated S=1/2 two-dimensional Heisenberg antiferromagnet in an applied magnetic field
• Anisotropic damping of the spin fluctuations in doped La2-xSrxCuO4 studied by resonant inelastic x-ray scattering
• Site-selective Probe of Magnetic Excitations in Rare-earth Nickelates using Resonant Inelastic X-ray Scattering
• Magnetic excitations in L-edge resonant inelastic x-ray scattering from cuprate compounds
• Orbital engineering in nickelate heterostructures driven by anisotropic oxygen hybridization rather than orbital energy levels
• On the extraction of paramagnon excitations from resonant inelastic X-ray scattering experiments
• High-Energy Continuum of Magnetic Excitations in the Two-Dimensional Quantum Antiferromagnet Sr2CuO2Cl2
• Epitaxial engineering of flat silver fluorides cuprate analogs
• Momentum dependent light scattering in insulating cuprates
• Momentum-dependent light scattering in a 2D Heisenberg antiferromagnet
• Magnon Splitting Induced by Charge Transfer in the Three-Orbital Hubbard Model
• Strong Three-magnon Scattering in Cuprates by Resonant X-rays

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• Fractional spin excitations in the infinite-layer cuprate CaCuO${}_2$
• Dynamical spin susceptibility in La2CuO4 studied by resonant inelastic x-ray scattering
• Unraveling higher-order corrections in the spin dynamics of RIXS spectra
• Update of $\mathcal{H}\Phi$: Newly added functions and methods in versions 2 and 3
• Single- and Multimagnon Dynamics in Antiferromagnetic $\alpha$-Fe${}_2$O${}_3$ Thin Films
• Low temperature magnetism of KAgF3
• Exploring d-Wave Magnetism in Cuprates from Oxygen Moments
• On the cuprates' universal waterfall feature: evidence of a momentum-driven crossover
• Cavity-Enhanced Optical Manipulation of Antiferromagnetic Magnon-Pairs
• Paramagnon dispersion and damping in doped Na${}_x$Ca${}_{2-x}$CuO${}_2$Cl${}_2$
• Magnon Spectra of Cuprates beyond Spin Wave Theory
• Theoretical analysis of multi-magnon excitations in resonant inelastic x-ray scattering spectra of two-dimensional antiferromagnets
• Evolution of the magnetic excitations in electron-doped ${\mathrm{La}}_{2-x}{\mathrm{Ce}}_x{\mathrm{CuO}}_4$
• Detection of a two-phonon mode in a cuprate superconductor via polarimetric RIXS
• Dynamic charge order from strong correlations in the cuprates
• Observation of spin-conserving two-spinon continuum in the $S$=1/2 antiferromagnetic chain system Sr${}_2$CuO${}_3$ using Cu $K$-edge resonant inelastic x-ray scattering
• Bimagnon dispersion of La2CuO4 probed by resonant inelastic X-ray scattering
• Composite antiferromagnetic and orbital order with altermagnetic properties at a cuprate/manganite interface
• Elementary excitations in undoped layered cuprates
• Multimagnon and multispinon $L_3$-edge RIXS spectra of an effective ${\tilde{J}}_1-{\tilde{J}}_2-{\tilde{J}}_3$ square lattice Heisenberg model
• Evaluating covalency using RIXS spectral weights: Silver fluorides vs. cuprates