Coherent control of charge and lattice dynamics in a photoinduced neutral-to-ionic transition of a charge-transfer compound.
Coherent control of charge and lattice dynamics in a photoinduced neutral-to-ionic transition of a charge-transfer compound.
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DOI：
10.1103/physrevlett.96.057403
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发表时间：
2006-02
影响因子：
8.6
通讯作者：
Shinichiro Iwai;Y. Ishige;Shu Tanaka;Y. Okimoto;Y. Tokura;Hiroshi Okamoto
中科院分区：
文献类型：
--
作者：
Shinichiro Iwai;Y. Ishige;Shu Tanaka;Y. Okimoto;Y. Tokura;Hiroshi Okamoto
通过使用双飞秒激光脉冲，成功地证明了电荷转移（CT）化合物四硫富瓦烯-对四氯苯醌对与中性（N）-离子（I）跃迁相关的电荷晶格耦合振荡的相干控制。通过改变两个激光脉冲的间隔，对CT程度敏感的分子内过渡带的反射率的振荡幅度周期性地改变。随着泵浦强度的增加，振荡幅度显着增强。这种增强是根据 N-I 转换的合作性质来讨论的。
Coherent control of a charge-lattice coupled oscillation associated with the neutral (N)-ionic (I) transition was successfully demonstrated for a charge-transfer (CT) compound, tetrathiafulvalene-p-chloranil, with use of double femtosecond laser pulses. By changing the interval of the two laser pulses, amplitude of the oscillation in the reflectivity for the intramolecular transition band sensitive to the degree of CT was periodically changed. With increase of the pump intensity, the oscillation amplitude was dramatically enhanced. Such an enhancement is discussed in terms of the cooperative nature of the N-I transition.