Critical current in charge-density wave transport

A. A. Sinchenko; V. Ya. Pokrovski; S. G. Zybtsev; I. G. Gorlova; Yu. I. Latyshev; P. Monceau

Critical current in charge-density wave transport

Strongly Correlated Electrons 2007-05-23 v1 Superconductivity

Authors: A. A. Sinchenko , V. Ya. Pokrovski , S. G. Zybtsev , I. G. Gorlova , Yu. I. Latyshev , P. Monceau

Abstract

We report transport measurements under very high current densities $j$ , up to $\sim10^8$ ~A/cm $^2$ , of quasi-one-dimensional charge-density wave (CDW) conductors NbSe $_3$ and TaS $_3$ . Joule heating has been minimized by using a point-contact configuration or by measuring samples with extremely small cross-sections. Above $j_c \approx 10^7$ ~A/cm $^2$ we find evidence for suppression of the Peierls gap and development of the metallic state. The critical CDW velocity corresponding with $j_0$ is comparable with the sound velocity, and with $\Delta/ \hbar k_F$ ( $k_F$ is the Fermi wave vector), which corresponds to the depairing current. Possible scenarios of the Peierls state destruction are discussed.

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@article{arxiv.cond-mat/0101124,
  title  = {Critical current in charge-density wave transport},
  author = {A. A. Sinchenko and V. Ya. Pokrovski and S. G. Zybtsev and I. G. Gorlova and Yu. I. Latyshev and P. Monceau},
  journal= {arXiv preprint arXiv:cond-mat/0101124},
  year   = {2007}
}

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5pages, 5 figures

Critical current in charge-density wave transport

Abstract

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