Anomalous pinning enhancement during the superconducting-normal transition of 2H-NbSe2
Abstract
The magnetic-field dependence of the resistance (R-H) of 2H-NbSe2 was carefully measured. Accompanied by the superconducting-normal (S-N) transition, a small resistance dip emerges near the upper critical field Hc2. This anomaly was consolidated by that of the critical current, which presents a shoulder in the Ic-H curve at the corresponding field. We tentatively proposed a model involving the repinning of the moving vortices. From this scenario, theoretical deduction leads to consistent results in this region.
- Publication:
-
EPL (Europhysics Letters)
- Pub Date:
- April 2004
- DOI:
- 10.1209/epl/i2003-10208-x
- Bibcode:
- 2004EL.....66..272Y