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Re-entrant peak effect in an anisotropic superconductor 2H-NbSe2: Role of disorder
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UNSPECIFIED (1998) Re-entrant peak effect in an anisotropic superconductor 2H-NbSe2: Role of disorder. EUROPHYSICS LETTERS, 44 (1). pp. 91-97.
Research output not available from this repository, contact author.Abstract
The influence of disorder (induced by pinning centres) on the peak effect (PE) phenomenon, namely, an anomalous increase in J(c) vs. H (or T), has been studied in the anisotropic superconductor 2H-NbSe2. Results from new electrical transport as well as de and ac magnetic response studies are presented to demonstrate that increasing disorder shrinks the (H, T) parameter space over which the vortex lattice retains spatial order. We find that the re-entrant nature of PE is clearly manifested only in crystals which have moderate amount of disorder. We also find that the upper branch of the PE curve is fairly robust, whereas the lower re-entrant branch is strongly affected by disorder.
| Item Type: | Journal Article | ||||
|---|---|---|---|---|---|
| Subjects: | Q Science > QC Physics | ||||
| Journal or Publication Title: | EUROPHYSICS LETTERS | ||||
| Publisher: | E D P SCIENCES | ||||
| ISSN: | 0295-5075 | ||||
| Official Date: | 1 October 1998 | ||||
| Dates: |
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| Volume: | 44 | ||||
| Number: | 1 | ||||
| Number of Pages: | 7 | ||||
| Page Range: | pp. 91-97 | ||||
| Publication Status: | Published |
Data sourced from Thomson Reuters' Web of Knowledge
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