L. Krusinelbaum et al., A PATH TO HIGH-FIELD PERFORMANCE OF CUPRATE SUPERCONDUCTORS ABOVE 100K WITH FISSION INDUCED DEFECTS, Physica. C, Superconductivity, 282, 1997, pp. 375-378
We demonstrate a method by which we expand the useful range of cuprate
superconductors to above 100 K and enhance persistent currents by ord
ers of magnitude in fields of several Tesla - namely fission of Hg nuc
lei within Hg-cuprates with 0.8 GeV protons. The fission process allow
s ''doping'' these cuprates with strongly pinning splayed columnar def
ects. The technique could be technologically relevant, since it is not
limited by the short penetration range of heavier particles (or ions)
and could permit modification of larger superconducting objects, such
as magnets.