Journal of Low Temperature Physics

, Volume 68, Issue 5–6, pp 335–352 | Cite as

Flux vortex dynamics and electric fields in matched pinning systems

  • M. G. Blamire


The pinning of flux vortices in type II superconductors has been the subject of extensive research. Certain experiments have attempted to investigate this problem by the use of specially prepared pinning structures consisting of regular arrays of pinning centers. In this paper a theory relating to such experiments is described. This theory is based on the existence and properties of defects in an otherwise perfect vortex lattice which is commensurate with a pinning array consisting of a triangular lattice of holes in a superconducting thin film. A quantitative treatment predicts the existence and position of substructure on the critical current versus magnetic field curves in addition to the main peaks previously predicted to occur when the vortex and hole lattices are exactly matched. The theory also qualitatively describes the overall shape of these curves. An analysis of the temperature dependence of this substructure shows broad agreement with existing experimental results. The application of this theory to future experiments should allow a detailed investigation of vortex lattice elasticity and flux flow.


Magnetic Field Vortex Thin Film Magnetic Material Main Peak 
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Copyright information

© Plenum Publishing Corporation 1987

Authors and Affiliations

  • M. G. Blamire
    • 1
  1. 1.Department of Materials Science and MetallurgyUniversity of CambridgeCambridgeEngland

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