Capturing one-dimensional precursors of a photoinduced transformation in a material |
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Authors: | Guérin Laurent Hébert Johan Buron-Le Cointe Marylise Adachi Shin-ichi Koshihara Shin-ya Cailleau Hervé Collet Eric |
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Institution: | JST, Exploratory Research for Advanced Technology, 1-1 Oho, Tsukuba, Ibaraki, 305-0801, Japan. |
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Abstract: | Achieving control of photoinduced phase transitions requires understanding how materials work during transformation induced by a laser pulse. Here we investigate the precursors of a photoinduced phase transition in the highly cooperative charge-transfer molecular crystal tetrathiafulvalene-p-chloranil and provide key insights. The photogeneration of one-dimensional nanoscale clusters was detected by time-resolved diffuse x-ray scattering with 50-ps time resolution. Such clustering of structurally relaxed electronic excitations is expected to be a common process in many materials presenting photoinduced transformations. |
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