The effects of heavy-ion irradiation of superconductivity in YBa[sub 2]Cu[sub 3]O[sub 7] epitaxial films [electronic resource].
- Washington, D.C. : United States. Dept. of Energy, 1992. and Oak Ridge, Tenn. : Distributed by the Office of Scientific and Technical Information, U.S. Dept. of Energy.
- Physical Description:
- Pages: (4 pages) : digital, PDF file
- Additional Creators:
- Brookhaven National Laboratory, United States. Department of Energy, and United States. Department of Energy. Office of Scientific and Technical Information
- We report a comparative study of the superconducting behavior in YBa[sup 2]Cu[sup 3]O[sup 7] epitaxial films irradiated with Ag and Au ions of several hundred MeV energy. The irradiation results in columnar defects of average diameter [approximately] 55 and [approximately]110 [Angstrom] for Ag[sup +21] and Au[sup +24] ions respectively. A universal linear scaling is observed between the fractional areal damage vs the superconducting transition temperature and normal state resistivity. Our results also show that in these films with intrinsically strong pinning, a marginal enhancement in the critical current density (J[sub c]) occurs when the defect density is [le] 5 [times] 10[sup 10]/cm[sup 2] and the defect diameter is of the order of coherence length. This criterion is satisfied by the silver ions. The damage due to Au[sup +24] ions is much too severe to improve the J[sub c].
- Published through SciTech Connect., 01/01/1992., "bnl-47369", " conf-920802--28", "DE93002325", Applied superconductivity conference, Chicago, IL (United States), 23-28 Aug 1992., and Suenaga, M.; Zhu, Y.; Budhani, R.C.
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