F.J. Himpsel, T.A. Jung, et al.
Surface Review and Letters
A series of YBa2Cu3O7-δ(YBCO) epitaxial films and crystals were irradiated with energetic heavy ions (Sn30+ or Ag29+ at energy 0.58 GeV) to produce columnar defects of highly disordered material. The irreversibility lines, B*(T), show enhancement due to the increased pinning. However, while B* does not exceed that observed in the highest-Jc as-grown epitaxial thin films, the values approach the proposed vortex melting line determined by a number of experiments on nearly defect-free single crystals. These results are interpreted in terms of the predicted upper limit of pinning energies in anisotropic superconductors, and the thermally-induced decoupling of vortex segments. © 1994.
F.J. Himpsel, T.A. Jung, et al.
Surface Review and Letters
Elizabeth A. Sholler, Frederick M. Meyer, et al.
SPIE AeroSense 1997
R.J. Gambino, N.R. Stemple, et al.
Journal of Physics and Chemistry of Solids
Ming L. Yu
Physical Review B