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arXiv 1010.2893cond-mat.mtrl-scicond-mat.dis-nncond-mat.stat-mech
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晶体有机半导体中的瞬态局域化

Transient localization in crystalline organic semiconductors

S. Ciuchi, S. Fratini, D. Mayou

摘要:

从Kubo公式导出的关系式表明,在杂质半导体中低于带隙频率的光学电导率测量可用于直接探测载流子的时间相关量子动力学。这允许提取基本量,如弹性和非弹性散射率,以及在无序系统的本地化长度。当应用到晶体有机半导体,一个初始的电子本地化所造成的大动态晶格无序被揭开,这意味着半经典输运的故障。

英文摘要:

A relation derived from the Kubo formula shows that optical conductivity measurements below the gap frequency in doped semiconductors can be used to probe directly the time-dependent quantum dynamics of charge carriers. This allows to extract fundamental quantities such as the elastic and inelastic scattering rates, as well as the localization length in disordered systems. When applied to crystalline organic semiconductors, an incipient electron localization caused by large dynamical lattice disorder is unveiled, implying a breakdown of semiclassical transport.

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

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