Back to Search
Start Over
Suppression of flux avalanches in superconducting films by electromagnetic braking
- Source :
- Applied Physics Letters. 96:092512
- Publication Year :
- 2010
- Publisher :
- AIP Publishing, 2010.
-
Abstract
- Magnetic fields perpendicular to superconducting films often trigger vortex avalanches, which always are very harmful for electronic devices and other applications. Such avalanches can be suppressed by a metal layer placed in contact with the superconductor surface, an effect that up to now has been thought to be a consequence of improved heat conduction. Here we show experimentally that the role of the metal layer is not that of a heat-sink, but rather that of an electromagnetic drag due to eddy currents induced in the metal layer during the abrupt onset of the flux avalanches. The effect is demonstrated for films of MgB2 and Nb.
Details
- ISSN :
- 10773118 and 00036951
- Volume :
- 96
- Database :
- OpenAIRE
- Journal :
- Applied Physics Letters
- Accession number :
- edsair.doi...........49a0488f4d74711d95c54d0365da96b9
- Full Text :
- https://doi.org/10.1063/1.3350681