Ultrafast control of spin-orbital separation probed with time-resolved RIXS
arXiv:2111.12514 · doi:10.1103/PhysRevB.106.L121107
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 SrCuO. Here, we theoretically analyze the time-resolved RIXS spectrum of SrCuO under the action of a time-dependent electric field. We show that the external field can reversibly modify the parameters in the effective 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.
arXiv comment13 pages, 4 figures
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