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Article Dans Une Revue Journal de Physique IV Proceedings Année : 1993

Narrow-band "noise" and damping in NbSe3

J. Richard
Jie Chen
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S. Artemenko
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Résumé

We report the results of a Narrow-band "Noise" (NBN) study, in NbSe3 for magnetic fields up to 19 T and temperatures as low as 15 K. The first result of this NBN study is the observation of the decrease of dJCDW/dv with decreasing temperatures for both transitions. We report also new values for the absolute value dJCDW/dv for both transitions, and the existence of a curvature of dJCDW/dv versus frequency, in low frequency range. We have interpreted the decrease of dJCDW/dv with temperatures in terms of Artemenko's theory which has been used in 1984 to explain the non-linear Hall effect in TaS3. The total longitudinal current is given by [MATH], where the therm -AJCDW is a backward normal current flow due to the movin CDW. From the saturing value of dE/dv obtained in high electric field we have deducedet the total damping parameter [MATH] which is decreasing with temperature. Using data obtained under application of a magnetic field of 7 T and the Wonneberger's theory for the ac response of the collective mode, we have deduced the thermal variation of the bare phason damping coefficient [MATH]. We report that for [MATH] very close to the theoretical predictions of Takada, Wong and Holstein.

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jpa-00251575 , version 1 (04-02-2008)

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J. Richard, Jie Chen, S. Artemenko. Narrow-band "noise" and damping in NbSe3. Journal de Physique IV Proceedings, 1993, 03 (C2), pp.C2-33-C2-38. ⟨10.1051/jp4:1993206⟩. ⟨jpa-00251575⟩

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