Ultrafast control of spin-orbital separation probed with time-resolved RIXS

Abstract

Quasi-one-dimensional systems exhibit many-body effects elusive in higher dimensions. A prime example is spin-orbital separation, which has been measured by resonant inelastic X-ray scattering (RIXS) in Sr${}_2$CuO${}_3$. Here, we theoretically analyze the time-resolved RIXS spectrum of Sr${}_2$CuO${}_3$ under the action of a time-dependent electric field. We show that the external field can reversibly modify the parameters in the effective $t-J$ model used to describe spinon and orbiton dynamics in the material. For strong driving amplitudes, we find that the spectrum changes qualitatively as a result of reversing the relative spinon to orbiton velocity. The analysis shows that in general, the spin-orbital dynamics in Mott insulators in combination with time-resolved RIXS should provide a suitable platform to explore the reversible control of many-body physics in the solid with strong laser fields.

13 pages, 4 figures

References in corpus (17)

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• Tunable gauge potential for neutral and spinless particles in driven lattices
• Nonthermal pathways to ultrafast control in quantum materials
• Spin-Orbital Separation in the quasi 1D Mott-insulator Sr2CuO3
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• Ultrashort Lifetime Expansion for Indirect Resonant Inelastic X-ray Scattering
• Probing light-driven quantum materials with ultrafast resonant inelastic X-ray scattering
• Theory for Time-Resolved Resonant Inelastic X-ray Scattering
• Numerical time propagation of quantum systems in radiation fields
• Simulation of time-dependent resonant inelastic X-ray scattering using non-equilibrium dynamical mean-field theory
• Designing spin and orbital exchange Hamiltonians with ultrashort electric field transients
• Mobile orbitons in Ca${}_2$CuO${}_3$: crucial role of the Hund's exchange
• Fluctuation control of non-thermal orbital order
• Anomalous spin-charge separation in a driven Hubbard system
• Controlling ligand-mediated exchange interactions in periodically driven magnetic materials
• Attosecond Molecular Spectroscopy and Dynamics

Cited by in corpus (5)

• Photo-induced nonequilibrium states in Mott insulators
• Photo-induced charge-transfer renormalization in NiO
• Dynamics of photo-induced ferromagnetism in oxides with orbital degeneracy
• Engineering Photon-mediated Long-Range Spin Interactions in Mott Insulators
• Nonthermal order by disorder