Abstract
We report the results of a Narrow-band «Noise» (NBN) study, in NbSe 3 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 dJ CDW /dν with decreasing temperatures for both transitions. We report also new values for the absolute value dJ CDW /dν for both transitions, and the existence of a curvature of dJ CDW /dν versus frequency, in low frequency range. We have interpreted the decrease of dJ CDW /dν with temperatures in terms of Artemenko's theory which has been used in 1984 to explain the non-linear Hall effect in TaS 3 . The total longitudinal current is given by J T =J CDW (1-A)+σ 1 E, where the therm -AJ CDW is a backward normal current flow due to the moving CDW. From the saturing value of dE/dν obtained in high electric field we have deduced the total damping parameter τ -1 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 τ 0 -1 . We report that for T<30K,τ 0 -1 ∼AT 4.5 very close to the theoretical predictions of Takada, Wong and Holstein
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a callDisclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.
