Surface barrier for flux entry and exit in mesoscopic superconducting systems

Golibjon Berdiyorov, L. R E Cabral, F. M. Peeters

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The energy barrier which has to be overcome for a single vortex to enter or exit the sample is studied for thin superconducting disks, rings, and squares using the nonlinear Ginzburg-Landau theory. The shape and the height of the nucleation barrier is investigated for different sample radii and thicknesses and for different values of the Ginzburg-Landau parameter κ. It is shown that the London theory considerably overestimates (underestimates) the energy barrier for vortex expulsion (penetration).

Original languageEnglish
Article number095105
JournalJournal of Mathematical Physics
Issue number9
Publication statusPublished - Sep 2005
Externally publishedYes


ASJC Scopus subject areas

  • Physics and Astronomy(all)
  • Statistical and Nonlinear Physics
  • Mathematical Physics

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