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Observation of flux lattice melting in YBCO by small angle neutron scattering

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Czechoslovak Journal of Physics Aims and scope

Abstract

We have performed detailed SANS investigations on a large, high quality, twinned YBCO single crystal. The crystal was oriented with H 51 degrees to c to reduce the effect of twin plane pinning. The diffracted intensity was found to disappear at a temperature well below Hc2(T). The data is consistent with a Lindemann melting criterion giving a physically reasonable value forc L of 0.15 that is in good agreement with previous work. The disappearance of the diffracted intensity coincides with the irreversibility lines as measured by an inductance technique.

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Authors and Affiliations

  1. Superconductivity Research Group, Birmingham University, B15 2TT, Birmingham, UK

    M. T. Wylie, E. M. Forgan & S. Lloyd

  2. School of Physics, University of St. Andrews, KY16 9SS, Fife, Scotland

    S. Lee

  3. Institut Max von Laue-Paul Langevin, 38042, Grenoble Cedex, France

    R. Cubitt

  4. Solid State Division, Oak Ridge National Laboratory, 37831, Oak Ridge, Tennessee, USA

    M. Yethiraj & H. A. Mood

Authors
  1. M. T. Wylie
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  2. E. M. Forgan
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  3. S. Lloyd
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  4. S. Lee
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  5. R. Cubitt
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  6. M. Yethiraj
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  7. H. A. Mood
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Wylie, M.T., Forgan, E.M., Lloyd, S. et al. Observation of flux lattice melting in YBCO by small angle neutron scattering. Czech J Phys 46 (Suppl 3), 1569–1570 (1996). https://doi.org/10.1007/BF02562899

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  • DOI: https://doi.org/10.1007/BF02562899

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