Relaxation oscillations during the laser-induced spin state transition of a [Fe(PM-BiA)(2)(NCS)(2)] complex

Article

关键词: IRON(II) COMPLEXES;    ROOM-TEMPERATURE;    CROSSOVER;    HYSTERESIS;    SHOT;   

DOI  :  10.1103/PhysRevB.87.024303

来源: SCIE

【 摘 要 】

We performed an optical pump-probe experiment to monitor the laser-induced spin state transition of [Fe(PM-BiA)(2)(NCS)(2)] spin crossover microcrystallites. The sample is illuminated by a continuous-wave pump laser centered at lambda = 976 nm that switches the compound from the low-spin to the high-spin state. When the pump laser is switched on or off, and above a given power threshold, the diffuse reflectivity of the sample increases or decreases, respectively, and presents characteristic damped oscillations that are not due to laser-induced excited spin state trapping. We propose a shell-core model that, due to the laser-induced heating and spin state transition of the microcrystallites, accounts very well for the reported observations. DOI: 10.1103/PhysRevB.87.024303

【 授权许可】

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