Theory for Time-Resolved Resonant Inelastic X-ray Scattering

Abstract

Time-resolved measurements of materials provide a wealth of information on quasiparticle dynamics, and have been the focus of optical studies for decades. In this paper, we develop a theory for explicitly evaluating time-resolved resonant inelastic X-ray scattering (tr-RIXS). We apply the theory to a non-interacting electronic system and reveal the particle-hole spectrum and its evolution during the pump pulse. With a high-frequency pump, the frequency and amplitude dependence analysis of the spectra agrees well with the steady-state assumptions and Floquet excitations. When the pump frequency is low, the spectrum extracts real-time dynamics of the particle-hole continuum in momentum space. These results verify the correctness of our theory and demonstrate the breadth of physical problems that tr-RIXS could shed light on.

arXiv comment14 pages, 7 figures

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• Probing light-driven quantum materials with ultrafast resonant inelastic X-ray scattering
• Exploring Quantum Materials with Resonant Inelastic X-Ray Scattering
• Time-Resolved Resonant Inelastic X-Ray Scattering in a Pumped Mott Insulator
• Photo-induced nonequilibrium states in Mott insulators
• Simulation of time-dependent resonant inelastic X-ray scattering using non-equilibrium dynamical mean-field theory
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• Photoinduced electron-electron pairing in the extended Falicov-Kimball model
• Fluctuation control of non-thermal orbital order
• Observing photo-induced chiral edge states of graphene nanoribbons in pump-probe spectroscopies
• Controlling core-hole lifetime through an x-ray planar cavity
• Stroboscopic Tests for Thermalization of Electrons in Pump/Probe Experiments
• New Implementation of an Equation-of-Motion Coupled-Cluster Damped-Response Framework with Illustrative Applications to Resonant Inelastic X-ray Scattering
• Floquet-engineered light-cone spreading of correlations in a driven quantum chain
• Probing magnetic orbitals and Berry curvature with circular dichroism in resonant inelastic X-ray scattering
• Local interpretation of time-resolved X-ray absorption in Mott insulators: Insights from nonequilibrium dynamical mean-field theory
• Electron-mediated entanglement of two distant macroscopic ferromagnets within a nonequilibrium spintronic device
• Ultrafast control of spin-orbital separation probed with time-resolved RIXS
• Theory of electron-phonon interactions in extended correlated systems probed by resonant inelastic x-ray scattering
• A set-up for Hard X-ray Time-resolved Resonant Inelastic X-ray Scattering at SwissFEL
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