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