J. Phys. IV France
Volume 12, Numéro 9, November 2002
Page(s) 127 - 128

J. Phys. IV France
12 (2002) Pr9-127
DOI: 10.1051/jp4:20020377

On the critical current for the charge density wave transport

A.A. Sinchenko1, S.G. Zybtsev2, I.G. Gorlova2, Yu.I. Latyshev2, V.Ya. Pokrovskii2 and P. Monceau3

1  Moscow State Engineering Physics Institute, Kashirskoe Sh. 31, 115409 Moscow, Russia
2  Institute of Radio-Engineering and Electronics RAS, Mokhovaya 11-7, GSP-9, I01999 Moscow, Russia
3  Centre de Recherches sur les Très Basses Temperatures, CNRS, BP. 166, 38042 Grenoble cedex 9, France

We report transport measurements under very high current densities j, up to 108 A/cm 2, of quasi-one-dimensional charge-density wave (CDW) conductors NbSe 3 and TaS 3. Above j0-101 A/cm 2 the point contacts NbSe 3-NbSe 3 show a sharp singularity, and the TaS 3 nanosamples show metallic temperature dependence (positive d R/d n. We interpret both results as an evidence for the suppression of the Peierls gap 2A and development of the metallic state above j0. Possible scenarios of the Peierls state destruction are discussed.

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