Vortex dynamics in nano-scaled superconducting complex structures (d-dot)

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

Research output: Contribution to journalConference articlepeer-review

4 Citations (Scopus)


Using the finite element method, we have solved the time-dependent Ginzburg-Landau equation for nano-scaled composite structures with s- and d-wave superconductors, which are called d-dots. Our result shows the external current can cause the transition between two degenerate flux states of the d-dot. We have examined the time dependence of the free energy of the d-dot system during this transition and confirmed the free energy has a double-well shape. Also, we show the transition time as a function of the external current.

Original languageEnglish
Pages (from-to)122-126
Number of pages5
JournalPhysica C: Superconductivity and its applications
Issue numberI
Publication statusPublished - 2005 Oct 1
Externally publishedYes
EventProceedings of the 17th International Symposium on Superconductivity (ISS 2004) Advances in Supeconductivity -
Duration: 2004 Nov 232004 Nov 25


  • Ginzburg-Landau theory
  • Half flux quantum vortex
  • High-T superconductors
  • Nano-scale superconductors

ASJC Scopus subject areas

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


Dive into the research topics of 'Vortex dynamics in nano-scaled superconducting complex structures (d-dot)'. Together they form a unique fingerprint.

Cite this