Expulsion of magnetic flux in a type-I superconducting strip

G. Jung, T. A. Girard, P. Valko, M. R. Gomes, V. Jeudy, D. Limagne, G. Waysand

Research output: Contribution to journalArticlepeer-review

3 Scopus citations


Flux expulsion in a type-I superconducting strip, induced by decrease of a perpendicular magnetic field following field increase-induced flux penetration, is observed by real time detection of the flux-induced voltage pulses. Three different expulsion regimes are identified, corresponding in general to the three initial regimes of flux penetration. The crossover field between two expulsion regimes is found to be associated with the change of nucleation mechanism at H(c2). Possible association of the expulsion onset with surface superconductivity and H(c3) is discussed. The results support the idea of existence of an energy barrier against flux expulsion.

Original languageEnglish
Pages (from-to)121-129
Number of pages9
JournalPhysica C: Superconductivity and its Applications
Issue number1-2
StatePublished - 21 Aug 2002


  • Flux expulsion
  • Geometric surface barrier
  • S-N transition
  • Type-I superconductivity

ASJC Scopus subject areas

  • Electronic, Optical and Magnetic Materials
  • Condensed Matter Physics
  • Energy Engineering and Power Technology
  • Electrical and Electronic Engineering


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