Abstract
We report that the phase transition between neutral and ionic phases (N-I transition) in the single crystal of tetrathiafulvalene-chloranil (TTF-CA) can be triggered by pulsed laser excitation with 80 femto-second pulse width. Irradiation with the pulsed laser light of which photon energy is 1.55eV can drive the phase changes in both I-to-N and N-to-I directions. We also report the excitation photon energy dependence of the N-I domain-wall dynamics.
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