Photo-Induced Phase Transition in an Electron-Lattice Correlated System : Future Role of a Time-Resolved X-ray Measurement for Materials Science(<Special Topics>Photo-Induced Phase Transitions and their Dynamics)

概要

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The search for materials that show a phase transition triggered by weak external stimulation of light is an important and attractive target for photonic and materials science. We review experimental evidence indicating that photo-injected local excitation can really trigger an electron-lattice coupled cooperative phenomenon called photo-induced phase transition (PIPT). We discuss the dynamical nature of electron (spin)-lattice-coupled changes in π-conjugated polymer crystals, organic transition metal complexes, and organic A_2B charge transfer complexes. We also review the development of ultra-fast X-ray technology in collaboration with work in the fields of quantum electronics and synchrotron radiation, which are essential for the promotion of the future study of PIPT.
社団法人日本物理学会の論文
2006-01-15