Fluxoid dynamics in superconducting thin film rings
Abstract
We have measured the dynamics of individual magnetic fluxoids entering and leaving photolithographically patterned thin film rings of the underdoped high-temperature superconductor Bi2Sr2CaCu2O8+δ, using a variable sample temperature scanning superconducting quantum interference device microscope. These results can be qualitatively described using a model in which the fluxoid number changes by thermally activated nucleation of a Pearl vortex in, and transport of the Pearl vortex across, the ring wall.
- Publication:
-
Physical Review B
- Pub Date:
- December 2003
- DOI:
- 10.1103/PhysRevB.68.214505
- arXiv:
- arXiv:cond-mat/0302415
- Bibcode:
- 2003PhRvB..68u4505K
- Keywords:
-
- 74.25.Qt;
- 74.20.Mn;
- 74.78.Bz;
- Vortex lattices flux pinning flux creep;
- Nonconventional mechanisms;
- High-T<sub>c</sub> films;
- Condensed Matter - Superconductivity
- E-Print:
- 9 pages, 10 figures, fixed typos