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arXiv · 1410.7002

Charge-density waves physics revealed by photoconduction

S. V. Zaitsev-Zotov·V. F. Nasretdinova·V. E. Minakova
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Abstract

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.

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S. V. Zaitsev-Zotov, V. F. Nasretdinova, V. E. Minakova. 2014-11-01. Charge-density waves physics revealed by photoconduction. https://doi.org/10.1016/j.physb.2014.11.064

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