Vortex pinning and motion in randomly frustrated Josephson-junction arrays

Lei Han TANG, Qinghu Chen

Research output: Contribution to journalConference articlepeer-review

3 Citations (Scopus)

Abstract

The current-voltage characteristics of a positionally disordered superconducting Josephson-junction network are investigated numerically. An efficient algorithm is proposed which enables one to simulate networks with up to 1024×1024 nodes. The I-V curves are highly nonlinear in the ordered phase. For a given temperature and external current, it is observed that the resistivity increases with disorder strength. This is in contrast to the behaviour of type-II superconductors in the mixed state where disorder reduces the resistivity through vortex pinning.

Original languageEnglish
Pages (from-to)227-229
Number of pages3
JournalPhysica B: Condensed Matter
Volume279
Issue number1-3
DOIs
Publication statusPublished - Apr 2000
EventThe 5th International Conference on Electrical Transport and Optical Properties of Inhomogeneous Media (ETOPIM5) - Kowloon Tong, Hong Kong
Duration: 21 Jun 199925 Jun 1999

Scopus Subject Areas

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

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