Ginzburg-Landau calculations of d-wave superconducting dot in s-wave superconducting matrix

Masaru Kato, Masayuki Ako, Masahiko Machida, Tomio Koyama, Takekazu Ishida

Research output: Contribution to journalArticlepeer-review

15 Citations (Scopus)


Applying the finite element method to the Ginzburg-Landau equation, we developed a numerical method that calculated superconducting states and magnetic field distributions for the composite structures of the high-Tc superconductor and the conventional superconductor in arbitrary geometries. We show spontaneous magnetic flux appears at the corner of the boundary of these two superconductors. Also we propose high-Tc superconducting dot embedded in conventional superconductors, which is named as d-dot, and show the spatial distribution of superconducting order parameters and the magnetic field for several d-dots.

Original languageEnglish
Pages (from-to)352-357
Number of pages6
JournalPhysica C: Superconductivity and its applications
Issue numberSPEC. ISS.
Publication statusPublished - 2004 Oct


  • Ginzburg-Landau equation
  • Half flux quantum
  • High- T superconductor
  • Nano-scaled superconductor

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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