Abstract
We report the observation of superconducting vortices in pure and lightly Al doped single crystals. Low field experiments allow for the estimation of the absolute value of the London penetration depth, for Experiments in higher fields (e.g., 200 Oe) clearly show a triangular vortex lattice in both real space Bitter decoration image of over 1000 vortices) and reciprocal space.
- Received 13 September 2002
DOI:https://doi.org/10.1103/PhysRevB.67.092512
©2003 American Physical Society