Article ID | Journal | Published Year | Pages | File Type |
---|---|---|---|---|
1820927 | Physica C: Superconductivity and its Applications | 2006 | 4 Pages |
Abstract
Both for a fundamental understanding of the flux penetration process and for technical applications, the role of artificial pinning sites (such as antidots) in superconductors generates a lot of interest. We perform magneto-optical imaging experiments on type-II Pb thin films patterned with square arrays of square antidots and square arrays of rectangular antidots and blind holes. We demonstrate that a square lattice of rectangular antidots can lead to similar anisotropy in flux penetration and critical current as a rectangular lattice of square antidots. In addition we show how thermo-magnetic avalanches can be guided—and hence to a certain extend controlled—by such holes.
Keywords
Related Topics
Physical Sciences and Engineering
Physics and Astronomy
Condensed Matter Physics
Authors
Diana G. Gheorghe, Mariela Menghini, Rinke J. Wijngaarden, Sophie Raedts, Alejandro V. Silhanek, Victor V. Moshchalkov,