Basic aspects of high-Tc grain boundary devices
J. Mannhart, H. Hilgenkamp, et al.
J. Phys. IV
The temperature and magnetic field dependences of the critical-current density of superconducting YBa2Cu3O7 films have been determined from transport measurements across individual [001] tilt boundaries and within single [001] grains. The results provide evidence that the basal-plane Jf is limited by flux creep. In contrast, the I-V characteristics and the temperature magnetic field dependences of the grain-boundary Jc are consistent with a superconductor- normal-superconductor-type weak-link behavior. These results imply that the transport properties of these materials can be treated within a BCS framework. © 1988 The American Physical Society.
J. Mannhart, H. Hilgenkamp, et al.
J. Phys. IV
R. Feder, P. Chaudhari
Wear
J. Mannhart
Supercond Sci Technol
P. Chaudhari
Japanese Journal of Applied Physics