Vortex dynamics in a ring-like irradiated Bi 2Sr 2CaCu 2O 8 crystal
Abstract
A Bi 2Sr 2CaCu 2O 8 crystal selectively irradiated near the edges is studied using a Hall-sensor array. Vortices penetrating into the central Jc = 0 region are “focused” in the center of the sample on increasing the applied field. In decreasing field, vortices leave the center and a large vortex accumulation is observed on the inner rim of the irradiated region. Spatially resolved magnetization measurements confirm the developed theoretical model.
- Publication:
-
Physica C Superconductivity
- Pub Date:
- December 1994
- DOI:
- 10.1016/0921-4534(94)92599-2
- Bibcode:
- 1994PhyC..235.2757K