Towards ultrafast spin-state switching in the solid state
Résumé
We report here on the photo-switching dynamics of a Fe(III) molecular material undergoing a spin-crossover. The thermal spin conversion is observed by magnetic and spectroscopic measurements, as well as imaging. The photoinducedswitching dynamics between the low-spin and the high-spinstates is studied with a femtosecond optical pump-probe technique. The results demonstrate that the switching occurs within a time-scale shorter than one picosecond.