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arXiv 1410.7002cond-mat.mes-hallcond-mat.mtrl-scicond-mat.str-el
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光电导揭示的电荷密度波物理

Charge-density waves physics revealed by photoconduction

S. V. Zaitsev-Zotov, V. F. Nasretdinova, V. E. Minakova

摘要:

本文综述了Peierls导体光电导的研究结果。所研究的材料是准一维导体的电荷密度波:K $_{0.3}$ MoO $_3$,无论是单斜晶系和正交晶系的TaS $_3$,也是半导体相的NbS $_3$(第一阶段)。实验方法,弛豫时间,线性和非线性电荷输运的照明效果,光电导的电场效应和光谱研究的结果进行了说明。我们证明,特别是,一个简单的模型调制能隙稍微平滑的波动适合现有的光谱数据相当不错。波动的水平是令人惊讶的小,不超过百分之几的光学能隙值。

英文摘要:

The results of photoconduction study of the Peierls conductors are reviewed. The studied materials are quasi-one-dimensional conductors with the charge-density wave: K$_{0.3}$MoO$_3$, both monoclinic and orthorhombic TaS$_3$ and also a semiconducting phase of NbS$_3$ (phase I). Experimental methods, relaxation times, effects of illumination on linear and nonlinear charge transport, the electric-field effect on photoconduction and results of the spectral studies are described. We demonstrate, in particular, that a simple model of modulated energy gap slightly smoothed by fluctuations fits the available spectral data fairly well. The level of the fluctuations is surprisingly small and does not exceed a few percent of the optical energy gap value.

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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