Femtosecond Structural Dynamics in VO2 during an Ultrafast Solid-Solid Phase Transition.

Femtosecond Structural Dynamics in VO2 during an Ultrafast Solid-Solid Phase Transition.

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Femtosecond x-ray and visible pulses were used to probe structural and electronic dynamics during an optically driven, solid-solid phase transition in VO(2). For high interband electronic excitation (approximately 5 x 10(21) cm(-3)), a subpicosecond transformation into the high-T, rutile phase of th...

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書誌詳細
主要な著者: Cavalleri, A, Tóth, C, Siders, C, Squier, J, Ráksi, F, Forget, P, Kieffer, J
フォーマット: Journal article
言語:English
出版事項: 2001
その他の書誌記述
要約:Femtosecond x-ray and visible pulses were used to probe structural and electronic dynamics during an optically driven, solid-solid phase transition in VO(2). For high interband electronic excitation (approximately 5 x 10(21) cm(-3)), a subpicosecond transformation into the high-T, rutile phase of the material is observed, simultaneous with an insulator-to-metal transition. The fast time scale observed suggests that, in this regime, the structural transition may not be thermally initiated.

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