Abstract
We demonstrated the ultrafast photoinduced Mott transition from a charge transfer (CT) insulator to a metal in a halogen-bridged Ni chain compound by visible-mid IR pump-probe reflection spectroscopy. Upon the excitation of the CT band, the spectral weight of the gap transition is transferred to the inner-gap region. When the excitation density exceeds 0.1 per Ni site, the Drude-like high-reflection band appears in the infrared region, indicating the formation of a metallic state. The photogeneration of the metallic state and the subsequent recovery of the original insulating state occur within a few picoseconds.
Original language | English |
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Pages (from-to) | 340-342 |
Number of pages | 3 |
Journal | Springer Series in Chemical Physics |
Volume | 79 |
Publication status | Published - 2004 Dec 1 |
ASJC Scopus subject areas
- Physical and Theoretical Chemistry