Volume 66, Number 2, April 2004
|Page(s)||272 - 276|
|Section||Condensed matter: electronic structure, electrical, magnetic, and optical properties|
|Published online||01 April 2004|
Anomalous pinning enhancement during the superconducting-normal transition of -
Structure Research Laboratory, University of Science and Technology of China and National High Magnetic Field Laboratory - Hefei, 230026, Anhui, PRC
Corresponding author: firstname.lastname@example.org
Accepted: 18 February 2004
The magnetic-field dependence of the resistance (R-H) of - was carefully measured. Accompanied by the superconducting-normal (S-N) transition, a small resistance dip emerges near the upper critical field . This anomaly was consolidated by that of the critical current, which presents a shoulder in the -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.
PACS: 74.25.Qt – Vortex lattices, flux pinning, flux creep / 74.25.Fy – Transport properties (electric and thermal conductivity, thermoelectric effects, etc.)
© EDP Sciences, 2004
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