Abstract
Using a micro-Hall probe, measurements of field of first flux penetration and the critical current density have been made near of superconducting . In the temperature region just below =86.0 K; <T<, it was found that and are strongly suppressed, leaving a reversible diamagnetic susceptibility. No similar effect is observed n which suggests that the highly two-dimensional character of is responsible for its particular behavior. The results are compared with recent theoretical predictions.
- Received 29 March 1993
DOI:https://doi.org/10.1103/PhysRevLett.71.785
©1993 American Physical Society