Pump-probe reflection spectroscopy was used to analyze the ultrafast photoinduced Mott transition from a charge transfer insulator to a metal in a halogen bridged Ni-chain compound. The spectral weight of the gap transition was found to be transferred to the inner gap region upon irradiation of a 130-femtosecond laser pulse. It was observed that the photogeneration of the metallic state and the subsequent recovery to the original gapped state occur within a few picoseconds.
|ジャーナル||Physical review letters|
|出版ステータス||Published - 2003 8月 1|
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