International Workshop on Electronic Crystals
S. Brazovskii, P. Monceau and N. Kirova
J. Phys. IV France 131 (2005) 95-100
DOI: 10.1051/jp4:2005131021

Photoconduction and photocontrolled collective phenomena in Peierls conductor TaS₃

S.V. Zaitsev-Zotov and V.E. Minakova

Institute of Radioengineering and Electronics of RAS, 125009 Mokhovaya 11, Moscow, Russia

Abstract
Effect of illumination on linear and nonlinear conduction of a quasi-one-dimensional conductor o-TaS₃ is studied. Evidence for the quadratic recombination is found. We demonstrate that the low-temperature conduction of TaS₃ is not provided by electrons and holes excited over the Peierls gap, whereas it is for photoconduction. Photoinduced change of the linear conduction results in appearance of long-living metastable states, substantial growth of the threshold field and increase of the low-temperature dielectric permittivity.

© EDP Sciences 2005

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