Pinning-induced formation of vortex clusters and giant vortices in mesoscopic superconducting disks
| Autor: | François M. Peeters, W. Escoffier, B. J. Baelus, L. Y. Vinnikov, Irina V. Grigorieva, S. V. Dubonos, Vyacheslav R. Misko |
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| Přispěvatelé: | Chemical Engineering and Industrial Chemistry, Chemical Engineering and Separation Science |
| Jazyk: | angličtina |
| Rok vydání: | 2006 |
| Předmět: |
Physics
Superconductivity Mesoscopic physics Condensed matter physics Condensed Matter - Mesoscale and Nanoscale Physics Condensed Matter - Superconductivity FOS: Physical sciences General Physics and Astronomy Magnetic flux Vortex Superconductivity (cond-mat.supr-con) Condensed Matter::Superconductivity Mesoscale and Nanoscale Physics (cond-mat.mes-hall) Pinning force Merge (version control) |
| Zdroj: | Physical review letters |
| ISSN: | 0031-9007 |
| Popis: | Multi-quanta, or giant, vortices (GVs) are known to appear in very small superconductors near the superconducting transition due to strong confinement of magnetic flux. Here we present evidence for a new, pinning-related, mechanism for the formation of GVs. Using Bitter decoration to visualise vortices in small Nb disks, we show that confinement in combination with strong disorder causes individual vortices to merge into clusters or even GVs well below Tc and Hc2, in contrast to well-defined shells of individual vortices found in the absence of pinning. 12 pages, 5 figures; the size of Figure 2 on p. 9 was reduced, as some information on it was lost in original submission |
| Databáze: | OpenAIRE |
| Externí odkaz: |
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