Effects of 300 MeV Au+24 ion irradiation on superconductivity in YBa2Cu3O7 epitaxial films
- 24 August 1992
- journal article
- research article
- Published by AIP Publishing in Applied Physics Letters
- Vol. 61 (8), 985-987
- https://doi.org/10.1063/1.108462
Abstract
We report the effects of 300 MeV gold ion irradiation on the transition temperature (Tc) and critical current density (Jc) of YBa2Cu3O7 epitaxial films. The radiation at a dose as low as 5.6×1010 ions/cm2 decreases the zero field Tc and Jc. However, the response of the mixed state in 1–8 T field remains relatively unchanged up to a dose of ∼9×1010 ions/cm2. We argue that the stiffness of the flux lines in a film geometry and the pinning sites distributed at a length scale much smaller than that of the ion‐induced defects are responsible for this null result.Keywords
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