Femtosecond dynamics of magnetic excitations from resonant inelastic x-ray scattering in CaCu2O3

Abstract

Taking spinon excitations in the quantum antiferromagnet CaCu2O3 as an example, we demonstrate that femtosecond dynamics of magnetic excitations can be probed by direct resonant inelastic x-ray scattering (RIXS). To this end, we isolate the contributions of single and double spin-flip excitations in experimental RIXS spectra, identify the physical mechanisms that cause them and determine their respective timescales. By comparing theory and experiment, we find that double spin flips need a finite amount of time to be generated, rendering them sensitive to the core-hole lifetime, whereas single spin flips are to a very good approximation independent of it. This shows that RIXS can grant access to time-domain dynamics of excitations and illustrates how RIXS experiments can distinguish between excitations in correlated electron systems based on their different time dependence.

References in corpus (3)

• Spin-Orbital Separation in the quasi 1D Mott-insulator Sr2CuO3
• Spin excitations in a single La${}_2$CuO${}_4$ layer
• Observation of a 500meV Collective Mode in La${}_{2-x}$Sr${}_x$CuO${}_4$ and Nd${}_2$CuO${}_4$

Cited by in corpus (22)

• Experimental Determination of Momentum-Resolved Electron-Phonon Coupling
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• Fractional spin excitations in the infinite-layer cuprate CaCuO${}_2$
• Low temperature dynamics of nonlinear Luttinger liquids
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• Bulk spectroscopic measurement of the topological charge of Weyl nodes with resonant x-rays
• Unraveling higher-order corrections in the spin dynamics of RIXS spectra
• Spectroscopic signatures of next-nearest-neighbor hopping in the charge and spin dynamics of doped one-dimensional antiferromagnets
• Highly dispersive magnons with spin-gap like features in the frustrated ferromagnetic S=1/2 chain compound Ca2Y2Cu5O10 detected by inelastic neutron scattering
• Single- and Multimagnon Dynamics in Antiferromagnetic $\alpha$-Fe${}_2$O${}_3$ Thin Films
• Crossover of the high-energy spin fluctuations from collective triplons to localized magnetic excitations in doped Sr14-xCaxCu24O41 cuprate ladders
• Experimental signatures of phase interference and sub-femtosecond time dynamics on the incident energy axis of resonant inelastic X-ray scattering
• Entanglement Witness for Indistinguishable Electrons using Solid-State Spectroscopy
• Observing Differential Spin Currents by Resonant Inelastic X-ray Scattering
• Theory of electron-phonon interactions in extended correlated systems probed by resonant inelastic x-ray scattering
• Site-specific electronic and magnetic excitations of the skyrmion material Cu${}_2$OSeO${}_3$
• Theoretical analysis of multi-magnon excitations in resonant inelastic x-ray scattering spectra of two-dimensional antiferromagnets
• Effect of broken symmetry on resonant inelastic x-ray scattering from undoped cuprates
• The influence of phonon symmetry and electronic structure on the electron-phonon coupling momentum dependence in 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
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