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Temperature dependence of for the SC complex. The data were obtained after thermal cycling between at . The PIPT phenomenon was investigated at point A . The closed circles in the hysteresis loop denote the slow HT-to-LT kinetics when the temperature is kept constant at point B . Inset is a schematic structure of in the HS state.
Changes in the absorption spectra for induced by a single-shot laser pulse ( duration) with a line at . The dash-dotted and dashed lines show the spectra before irradiation at 216 and , respectively. The numbered solid lines demonstrate the absorption spectral changes induced by irradiation with various absorbed photon densities of 1: ; 2: ; 3: ; 4: ; 5: ; and 6: .
(a) Dependence of the photoinduced phase-conversion fractions on the absorbed photon density obtained by irradiation with a line at . The inset shows the temporal dependence of the photoinduced change of the transmission intensity monitored at with . (b) Excitation energy dependence of the converted fractions at . In the measurement, was kept constant at around .
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