Thermal gradient experiments on the charge-density-wave conduction noise spectrum
The firmest evidence supporting theories1,2 which ascribe the voltage oscillations (narrow-band noise) to phase-slippage at the ends of the sample come from experiments performed with the sample in a thermal gradient3,4. In this short note we will review three classes of experiments which clarify different aspects of the problem. All experiments are done on high purity (RRR > 100) NbSe3 in two-probe configuration, except otherwise indicated. Where appropriate we will stress experimental details and difficulties. See K. Maki, these proceedings, for theoretical details.
KeywordsFundamental Frequency Copper Wire Sapphire Substrate Short Sample Voltage Oscillation
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- 1.N.P. Ong, G. Verma, and K. Maki, Phys. Rev. Lett. 52, 663 (1984); Kazumi Maki and N.P. Ong, to be published.Google Scholar
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- 4.X.J. Zhang and N.P. Ong, Phys. Rev., submitted; and unpublished.Google Scholar
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