Direct observation of the lattice of Abrikosov vortices in high- Tc superconductor YBa 2Cu 3O x single crystals
Abstract
The magnetic structure of the YBa 2Cu 3O x single crystal has been investigated using the technique of decorating the sample with small ferromagnetic particles. The lattice of the Abrikosov vortices and the effects caused by pinning on the twin boundaries have been observed in both the electron and optical microscopes. The twin structure of the single crystals has been investigated using the polarized light in the optical microscope. The penetration depth for the magnetic field parallel to the c axis has been evaluated as ≲ 0.3 μm at 4.2 K for the YBa 2Cu 3O x single crystal.
- Publication:
-
Solid State Communications
- Pub Date:
- July 1988
- DOI:
- 10.1016/0038-1098(88)91058-7
- Bibcode:
- 1988SSCom..67..421V