Abstract
The critical current density Jc(B,T) is measured to 15 T for c-axis-perpendicular expitaxial thin films of YBa2Cu3O7 with Jc(0,77 K) of order 106 A/cm2. Even in the least-favorable perpendicular orientation, critical currents can exceed 5×105 A/cm2 at 20 K in 15-T fields. Thermally activated flux motion (flux creep) is prominently observed, and can in large part explain the magnitude, temperature, and field dependence of the high-field critical currents.
Original language | English (US) |
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Pages (from-to) | 2044-2047 |
Number of pages | 4 |
Journal | Physical Review Letters |
Volume | 62 |
Issue number | 17 |
DOIs | |
State | Published - 1989 |
Externally published | Yes |
All Science Journal Classification (ASJC) codes
- General Physics and Astronomy