Abstract
A strong pinning force in a Nb superconducting thin film is formed by a triangular lattice of defects due to the structural corrugation that acts as pinning centers. The magnetoresistance measurement close to the transition temperature shows a set of minima of magnetoresistance at equal external field intervals. A crossover in current-voltage relations with matching field and half-integer matching field occurs for currents exceeding a certain threshold value. The phenomenon is related to the presence of pinning structures at matching fields.
Original language | English |
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Pages (from-to) | e1107-e1108 |
Journal | Journal of Magnetism and Magnetic Materials |
Volume | 272-276 |
Issue number | SUPPL. 1 |
DOIs | |
Publication status | Published - 2004 May 1 |
All Science Journal Classification (ASJC) codes
- Electronic, Optical and Magnetic Materials
- Condensed Matter Physics