Ultrafast Dynamics of a Charge-Transfer Dimer as a Model for the Photoinduced Phase Transition of Charge-Transfer Compounds

Larry Lueer; Cristian Manzoni; Giulio Cerullo; Guglielmo Lanzani; Moreno Meneghetti

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Ultrafast Dynamics of a Charge-Transfer Dimer as a Model for the Photoinduced Phase Transition of Charge-Transfer Compounds

机译：电荷转移二聚体的超快动力学作为电荷转移化合物的光致相变模型

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摘要

By applying ultrafast pump-probe spectroscopy with 15 fs temporal resolution to (TMTTF~+)_2 dimers we provide a full picture of the structural relaxation following photoexcitation of their CT transition. Both population and coherent phonon dynamics allow tracking wave packet motion onto the multidimensional excited state potential energy surface, as obtained by density functional theory calculations. We show that the vibrations that are strongly coupled to the charge-transfer transition of the dimer correspond to those driving the photoinduced phase transition occurring in charge-transfer crystalline solids.

机译：通过将时间分辨率为15 fs的超快泵浦探针光谱应用于（TMTTF〜+）_ 2二聚体，我们提供了CT跃迁光激发后结构弛豫的全貌。总体和相干声子动力学都允许将波包运动跟踪到多维激发态势能表面上，这是通过密度泛函理论计算获得的。我们表明，与二聚体的电荷转移跃迁密切相关的振动与那些驱动电荷转移结晶固体中发生的光致相变的振动相对应。

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来源
《Physical review letters》 |2007年第2期|027401.1-027401.4|共4页
作者
Larry Lueer; Cristian Manzoni; Giulio Cerullo; Guglielmo Lanzani; Moreno Meneghetti;
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作者单位

National Laboratory for Ultrafast and Ultraintense Optical Science, INFM-CNR, Dipartimento di Fisica, Politecnico di Milano, 20133 Milano, Italy;

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正文语种 eng
中图分类物理学;
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time-resolved optical spectroscopies and other ultrafast optical measurements in condensed matter; density functional theory; local density approximation; gradient and other corrections; 78.67.-n;

机译：时间分辨光谱学和其他在凝结物中的超快速光学测量;密度泛函理论;局部密度近似;梯度和其他校正;78.67.-n;

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1. Ultrafast photoinduced melting of spin-Peierls phase in the organic charge-transfer compounds alkali-tetracyanoquinodimethane [J] . K. Ikegami, K. Ono, J. Togo, Physical review . 2007,第8期

机译：超快速光诱导自旋-Peierls相在有机电荷转移化合物碱-四氰基喹二甲烷中的熔化
2. Ultrafast Photoinduced Melting of a Spin-Peierls Phase in an Organic Charge-Transfer Compound, K-Tetracyanoquinodimethane [J] . H. Okamoto, K. Ikegami, T. Wakabayashi, Physical review letters . 2006,第3期

机译：超快速光诱导的有机电荷转移化合物K-Tetracyanoquinodimethane中自旋Peierls相的熔融
3. Coherent Control of Charge and Lattice Dynamics in a Photoinduced Neutral-to-Ionic Transition of a Charge-Transfer Compound [J] . S. Iwai, Y. Ishige, S. Tanaka, Physical review letters . 2006,第5期

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4. Ultrafast dynamics of photoinduced phase transition - the role of time-resolved X-ray measurement [C] . Koshihara, S., Adachi, . 2005

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5. Ultrafast spectroscopic study on charge-transfer reactions in condensed phase. [D] . Son, Dong Hee. 2002

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Ultrafast Dynamics of a Charge-Transfer Dimer as a Model for the Photoinduced Phase Transition of Charge-Transfer Compounds

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