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Anomalous pinning enhancement during the superconducting-normal transition of 2H-NbSe2

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2004 EDP Sciences
, , Citation Song Yue et al 2004 EPL 66 272 DOI 10.1209/epl/i2003-10208-x

0295-5075/66/2/272

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.

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10.1209/epl/i2003-10208-x