The future of photo-induced phase transition (PIPT) – How fast and slow it can be changed?

作     者：A Tomita S Koshihara S Adachi J Itatani K Onda S Ogihara Y Nakano H Yamochi 

作者机构：Frontier Research Center and Department of Materials Science Tokyo Institute of Technology 2-12-1 Oh-okayama Meguro-ku Tokyo 152-8551 Japan ERATO 'Non-equilibrium Dynamics Project' JST To whom any correspondence should be addressed High Energy Accelerator Research Organization 1-1 O-ho Tsukuba Ibaraki 305-0801 Japan Institute for Solid State Physics University of Tokyo 5-1-5 Kashiwanoha Kashiwa Chiba 277-8581 Japan Department of Environmental Chemistry and Engineering Tokyo Institute of Technology 4259 Nagatsuta Midori-ku Yokohama 226-8502 Japan Institute for Integrated Cell-Material Sciences (iCeMS) Kyoto University Sakyo-ku Kyoto 606-8501 Japan Research Center for Low Temperature and Materials Sciences Kyoto University Saikyo-ku Kyoto 606-8502 Japan 

出 版 物：《Journal of Physics: Conference Series》 

年 卷 期：2009年第148卷第1期

学科分类：07[理学] 0702[理学-物理学] 

摘      要：The study of photo-controled nature of materials, including their optical, magnetic, and conducting properties, is a fascinating research field. The finding of photo-induced phase transition (PIPT) has triggered the search for inorganic and organic systems with highly efficient and ultrafast photo-responses. As a result of the recent progress in quantum-beam technologies, the time-resolved study of PIPT dynamics on the femto-second time scale, which is comparable with the single-cycle of phonon vibration, has become feasible. In contrast, ultra-slow dynamics on the time scales of a few seconds to several minutes play an important role in the cooperative phenomena in complex systems. Here, we review both the ultra-fast and ultra-slow dynamics of the photo-induced cooperative effects in a typical organic CT crystal (EDO-TTF)2PF6 and a protein molecule, myoglobin (Mb). In the case of Mb, we discuss the results from the viewpoint of a unique photo-functionality, i.e., the photo-induced transportation of a small molecule in the super-structure of a protein molecule.