Early-stage dynamics of light-matter interaction leading to the insulator-to-metal transition in a charge ordered organic crystal

Ultrafast dynamics of the light-matter interaction in a charge-ordered molecular insulator α-(BEDT-TTF)2I3 were studied by pump-probe spectroscopy using few-optical-cycle infrared pulses (pulse width 12 fs). Coherent oscillation of the correlated electrons and subsequent Fano destructive interferenc...

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Bibliographic Details
Published in:Physical review letters 2010-12, Vol.105 (24), p.246402-246402, Article 246402
Main Authors: Kawakami, Y, Fukatsu, T, Sakurai, Y, Unno, H, Itoh, H, Iwai, S, Sasaki, T, Yamamoto, K, Yakushi, K, Yonemitsu, K
Format: Article
Language:English
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Summary:Ultrafast dynamics of the light-matter interaction in a charge-ordered molecular insulator α-(BEDT-TTF)2I3 were studied by pump-probe spectroscopy using few-optical-cycle infrared pulses (pulse width 12 fs). Coherent oscillation of the correlated electrons and subsequent Fano destructive interference with intramolecular vibration were observed in time domain; the results indicated a crucial role for electron-electron interplay in the light-matter interaction leading to the photoinduced insulator-to-metal transition. The qualitative features of this correlated electron motion were reproduced by calculations based on exact many-electron-phonon wave functions.
ISSN:0031-9007
1079-7114
DOI:10.1103/physrevlett.105.246402