Chiral control of electron transmission through molecules.
Chiral control of electron transmission through molecules.
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DOI：
10.1103/physrevlett.101.238103
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发表时间：
2008-09
影响因子：
8.6
通讯作者：
S. Skourtis;D. Beratan;R. Naaman;A. Nitzan;D. Waldeck
中科院分区：
文献类型：
--
作者：
S. Skourtis;D. Beratan;R. Naaman;A. Nitzan;D. Waldeck
对于镜像结构，圆偏振光诱导的电子通过手性分子的传输可能会非常不同，这是一个特殊的事实，因为两个系统的电子能谱是相同的。我们认为，这种不对称性--共振输运的不对称性高达10%--是由镜像结构对相干激发的不同动力学响应引起的。这一行为是在电流转移(电荷转移及其动量信息)的一般新颖现象的背景下描述的，并解释了观察到的不对称性及其对结构的依赖。
Electron transmission through chiral molecules induced by circularly polarized light can be very different for mirror-image structures, a peculiar fact given that the electronic energy spectra of the systems are identical. We propose that this asymmetry--as large as 10% for resonant transport--arises from different dynamical responses of the mirrored structures to coherent excitation. This behavior is described in the context of a general novel phenomenon of current transfer (transfer of charge with its momentum information) and accounts for the observed asymmetry and its dependence on structure.