Ultrafast control of spin-orbital separation probed with time-resolved resonant inelastic x-ray scattering

Article

关键词: T-J MODEL;    CORRELATED MATERIALS;    SPECTRAL FUNCTIONS;    CHARGE SEPARATION;    TRANSITION;    SR2CUO3;   

DOI  :  10.1103/PhysRevB.106.L121107

来源: SCIE

【 摘 要 】

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 Sr2CuO3. Here, we theoretically analyze the time-resolved RIXS spectrum of Sr2CuO3 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.

【 授权许可】

Free