Abstract
Local magnetization measurements using micro-Hall probes in single crystals under various field angles from the axis reveal that the angular dependence of the first-order transition ( ) and the second peak ( ) is clearly different from the conventional scaling law. Instead, we found a novel angular scaling, which is expressed as [ : temperature dependent parameter] in a wide angle range. Two possible origins for this novel angular dependence are discussed: (1) The effect of the electromagnetic coupling between pancake vortices and (2) the suppression of the Josephson coupling by the in-plane field.
- Received 1 October 1998
DOI:https://doi.org/10.1103/PhysRevLett.82.4308
©1999 American Physical Society