Reflection Spectroscopic Study of Organic Conductors
Reflection Spectroscopic Study of Organic Conductors
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有机导体的反射光谱研究
DOI：
10.1246/bcsj.73.2643
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发表时间：
2000
影响因子：
4
通讯作者：
K. Yakushi
中科院分区：
文献类型：
--
作者：
K. Yakushi
本文综述了用偏振反射光谱研究准一维和准二维有机导体的低能光跃迁。有机导体的光学特性主要表现为强的各向异性、电子-电子相互作用以及与分子内振动的耦合。介绍了几种有机导体各向异性紧束缚带中迁移积分的提取方法。关联效应对带内过渡区的电导谱线形状有很大的影响。电子-分子振动耦合为我们提供了相变过程中结构涨落和结构变化的丰富信息。观察到的等离子体激元产生的混合与横向激发是由于电子结构的强各向异性。
The author reviews the low-energy optical transitions in quasi one- and two-dimensional organic conductors studied by polarized reflection spectroscopy. The characteristic optical properties of organic conductors are the strong anisotropy, electron-electron interaction, and coupling with intra-molecular vibration. The method to extract the transfer integrals in anisotropic tight-binding bands is described for several organic conductors. The correlation effect has a big influence on the line shape of the optical conductivity spectrum in the intra-band transition region. The electron-molecular vibration coupling provides us with rich information on the structural fluctuations and structural changes during the phase transition. The observation of plasmons resulting from the mixing with the transverse excitation is caused by the strong anisotropy in electronic structure.