Evidence for a Possible Order-Disorder Transition in the Josephson Junction Lattice of a Granular La1.85Sr0.15CuO4 Superconducting Oxide
Abstract
We present a detailed low field susceptibility study of a sintered La1.85Sr0.15CuO4 superconductor. We find that two critical temperatures should be considered in order to explain our observations. The lower one is characteristic of an order-disorder transition in the Josephson Junction lattice and scales as H .55. Moreover, it is inferred that field cooled data do not give the true bulk Meissner effect.
- Publication:
-
International Journal of Modern Physics B
- Pub Date:
- 1987
- DOI:
- 10.1142/S0217979287001481
- Bibcode:
- 1987IJMPB...1.1011G