Vortex dynamics under periodic high- Tc dot arrays embedded in low Tc superconductors

M. Machida, T. Koyama, M. Kato, T. Ishida

Research output: Contribution to journalConference articlepeer-review


We perform computer simulations for vortex dynamics in high-Tc dot arrays embedded in conventional low Tc superconductors by solving numerically the time-dependent Ginzburg-Landau (TDGL) equation. The high-T c dot repels vortices, which is in contrast to the anti-dot which works as a strong attractive pinning center. We find that vortex dynamics in the system is much different from that of the anti-dot array systems. For example, vortices can widely distribute outside the dot region when the applied magnetic field H is less than Hc2 of the substrate superconductor (H sc2), while vortices are confined inside very narrow regions between neighboring dots when H>Hsc2. The complex dynamics is explained in terms of the change of interaction between vortices at Hsc2.

Original languageEnglish
Pages (from-to)587-588
Number of pages2
JournalPhysica C: Superconductivity and its applications
Issue number1-4
Publication statusPublished - 2004 Aug
Externally publishedYes
EventProceedings of the International Conference on Materials - Rio de Janeiro, Brazil
Duration: 2003 May 252003 May 30


  • Computer simulation
  • Superconducting dot array
  • TDGL equation

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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