Abstract
Features have been observed in the current dependences of the torsion angle, φ(I), for samples of a quasi-one-dimensional conductor TaS3 irradiated by a high-frequency (HF) field. The features appear at the same current values as the Shapiro steps on the current-voltage characteristics, i.e., correspond to the synchronization of the motion of a charge-density wave (CDW) by the HF field. The shape of the features in the φ(I) dependences indicates a decrease in the inhomogeneous deformation of the CDW under the synchronization conditions. The investigation of torsion appears to be a highly sensitive method for determining the spatial coherence of the CDW.
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Original Russian Text © S.G. Zybtsev, M.V. Nikitin, V.Ya. Pokrovskii, 2010, published in Pis’ma v Zhurnal Éksperimental’noĭ i Teoreticheskoĭ Fiziki, 2010, Vol. 92, No. 6, pp. 448–453.
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Zybtsev, S.G., Nikitin, M.V. & Pokrovskii, V.Y. Shapiro steps in the torsion of a quasi-one-dimensional conductor TaS3 . Jetp Lett. 92, 405–409 (2010). https://doi.org/10.1134/S0021364010180098
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DOI: https://doi.org/10.1134/S0021364010180098