Nanosecond and picosecond dynamics of photo-induced phase-transition in low dimensional organic crystals

We report the dynamics of a unique photo-induced phenomenon in quasi-one-dimensional organic crystals; i.e. phase transitions triggered by photo-excitation in charge-transfer crystal tetrathiafulvalene-p-chloranil (TTF-CA). Domain wall movement in the single crystal has been investigated by means of nanosecond and picosecond time-resolved reflection spectroscopy.