Abstract
Primary dynamics of photo-induced melting of charge order (CO) and metallic domain formation in [bis(ethlylenedithio)] tetrathiafulvalene (BEDT-TTF) salts α-(BEDT-TTF)2I3 were studied using an infrared (1.4 μm) pump-probe spectroscopy with a time resolution of 30 fs. Faster (<30 fs) and slower (ca. 2 ps) responses of transient reflectivity accompanying the coherent phonon were detected. They are attributable to the local melting of CO and the stabilization of semi-macroscopic metallic domain, respectively. Moreover, the correlation time (τcor) of the photo-induced insulator to metal transition was also measured by double-pulse excitation. The observed τcor (0.4 ps) is shorter than the stabilization time of the semi-macroscopic metallic domain.
Original language | English |
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Pages (from-to) | 1065-1068 |
Number of pages | 4 |
Journal | Journal of Luminescence |
Volume | 128 |
Issue number | 5-6 |
DOIs | |
Publication status | Published - 2008 May |
Keywords
- Charge order
- Organic conductor
- Ultrafast spectroscopy
ASJC Scopus subject areas
- Biophysics
- Biochemistry
- Chemistry(all)
- Atomic and Molecular Physics, and Optics
- Condensed Matter Physics