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Thermal fluctuations and charge-density-wave depinning in NbSe3: Evidence for phase creep

Physical Review B, ISSN: 0163-1829, Vol: 43, Issue: 8, Page: 6800-6803
1991
  • 28
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  • 12
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Metric Options:   Counts1 Year3 Year

Metrics Details

  • Citations
    28
    • Citation Indexes
      28
  • Captures
    12

Article Description

We have studied the temperature dependence of the threshold electric field ET for charge-density-wave (CDW) depinning in NbSe3. At temperatures well below the Peierls transition TP, the fractional increase in ET with decreasing temperature is independent of crystal thickness. In very thin crystals near TP, the sharp threshold vanishes and nonlinear conduction occurs at arbitrarily small fields. A weak-pinning analysis suggests (1) that ETs low temperature increase may arise from a temperature dependence of the effective condensate density, and (2) that ETs vanishing in thin crystals is due to thermally assisted depinning of the CDW. © 1991 The American Physical Society.

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