Non commensurate vortex lattices in a composite antidot lattice or dc current

Golibjon Berdiyorov, M. V. Milošević, François M. Peeters

Research output: Contribution to journalArticle

2 Citations (Scopus)

Abstract

Within the phenomenological Ginzburg-Landau theory we investigate the effect of a composite antidot lattice and small dc applied current to the stability of commensurate and non commensurate vortex structures in perforated type-II superconducting samples in the weak pinning regime. We found that a composite antidot lattice, consisting of small and big antidots in the unit cell, considerably increases the probability to find square pinned vortex lattice as compared to a sample with a regular square array of antidots. An applied current also favors the square pinned vortex states. These results indicate that both the applied current and a composite pinning array distort the broad local minimum in the free energy which keeps the vortices away from the pinning centers.

Original languageEnglish
Pages (from-to)809-812
Number of pages4
JournalPhysica C: Superconductivity and its Applications
Volume468
Issue number7-10
DOIs
Publication statusPublished - 1 Apr 2008
Externally publishedYes

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Keywords

  • 74.20.De
  • 74.25.Ha
  • 74.78.Na
  • 75.75.+a
  • Ginzburg-Landau theory
  • Perforated superconductor
  • Vortex state
  • Weak pinning

ASJC Scopus subject areas

  • Condensed Matter Physics

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