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Detailed Structure of a CDW in a Quenched Random Field

J. D. Brock·A. C. Finnefrock·K. L. Ringland·E. Sweetland
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Abstract

Using high resolution x-ray scattering, we have measured the structure of the Q_1 CDW in Ta-doped NbSe_3. Detailed line shape analysis of the data demonstrates that two length scales are required to describe the phase-phase correlation function. Phase fluctuations with wavelengths less than a new length scale $a$ are suppressed and this $a$ is identified with the amplitude coherence length. We find that xi_a* = 34.4 \pm 10.3 angstroms. Implications for the physical mechanisms responsible for pinning are discussed.

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J. D. Brock, A. C. Finnefrock, K. L. Ringland, E. Sweetland. 1994-11-29. Detailed Structure of a CDW in a Quenched Random Field. https://doi.org/10.1103/physrevlett.73.3588

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