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Origine des courants critiques élevés des pellicules minces supraconductrices YBCO.

Origin of high critical currents YBCO superconducting thin films.

Auteurs : DAM B., HUIJBREGTSE J. M., KLAASSEN F. C., et al.

Type d'article : Article

Résumé

The authors make use of a sequential etching technique and find that both edge and screw dislocations are the linear defects that provide the strong pinning centres responsible for the high critical currents observed in these thin films. Moreover, they find that the superconducting current density is essentially independent of the density of linear defects at low magnetic fields. These natural linear defects, in contrast to artificially generated columnar defects, exhibit self-organized short-range order, suggesting that YBCO thin films offer an attractive system for investigating the properties of vortex matter in a superconductor with a tailored defect structure.

Détails

  • Titre original : Origin of high critical currents YBCO superconducting thin films.
  • Identifiant de la fiche : 2000-0597
  • Langues : Anglais
  • Source : Nature - vol. 399 - n. 6735
  • Date d'édition : 03/06/1999
  • Document disponible en consultation à la bibliothèque du siège de l'IIF uniquement.

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