X-ray diffraction investigation of the nature and the mechanism of photoinduced phase transition in molecular materials
X-ray diffraction investigation of the nature and the mechanism of photoinduced phase transition in molecular materials
复制标题
DOI：
10.1143/jpsj.75.011002
复制
发表时间：
2006-01-01
影响因子：
1.7
通讯作者：
Cailleau, H
中科院分区：
文献类型：
--
作者：
Collet, E;Buron-Le Cointe, M;Cailleau, H
激光驱动的固-固相变是一种新型的光操纵物质的方法，它为在宏观状态下控制材料的物理性质的转变提供了诱人的可能性。这可以通过利用材料的组成分子之间的协同相互作用来实现。慢动力学现象说明了光诱导自旋跃迁，长寿命的状态，可以在低温下使用连续波激发。一个快速的过程是示例性的中性离子相变在100皮秒的时间尺度上的瞬态诱导的100飞秒激光脉冲。自放大和自排序过程进行了讨论。
Laser driven solid-solid phase transition is a new kind of manipulation of matter by light which offers fascinating possibilities for controlling the switching of the physical properties of materials at the macroscopic state. This is possible by taking advantage of the cooperative interactions between the constituent molecules of the material. Slow dynamics phenomena are illustrated by the photo-induced spin transition, where long lived states can be generated at low temperature using cw excitation. A fast process is exemplified here by the neutral-ionic phase transition induced in a transient state on the 100-picosecond time-scale by a 100 femtosecond laser pulse. Self-amplification and self-ordering processes are discussed.