Transitions de phase dans des supraconducteurs sous-micromètriques individuels.

Phase transitions in individual sub-micrometre superconductors.

Résumé

The authors apply a new technique of ballistic Hall magnetometry to study the magnetization of individual superconducting discs of diameters down to 100 nanometres. The superconducting state of these discs is found to be qualitatively different from both macroscopic and microscopic superconductors, with numerous phase transitions whose character changes rapidly with size and temperature. This exotic behaviour is due to size quantization of the Cooper-pair motion and resulting transitions between discrete states of the superconducting Bose condensate in a magnetic field.

Détails

  • Titre original : Phase transitions in individual sub-micrometre superconductors.
  • Identifiant de la fiche : 1998-3332
  • Langues : Anglais
  • Source : Nature - vol. 390 - n. 6657
  • Date d'édition : 20/11/1997
  • Document disponible en consultation à la bibliothèque du siège de l'IIF uniquement.

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