Journal of Low Temperature Physics

, Volume 95, Issue 3–4, pp 663–680 | Cite as

Vortex depinning in superconducting wire networks

  • N. B. Kopnin
  • P. I. Soininen
Articles

Abstract

The pinning of vortices at low inductions is considered within the Ginzburg-Landau theory for both dense and sparse superconducting wire networks with periods d ≪ ξ(T)and d ⩾ ξ (T),respectively. For dense networks, the depinning current is calculated analytically and found to be exponentially small compared to the characteristic pair-breaking current. The depinning current for sparse networks is obtained numerically. The anomalous compression modulus for a vortex lattice in a thin superconducting film is calculated, and the effects of the vortex lattice rigidity on thermally activated vortex creep in a dense network are investigated.

Keywords

Vortex Magnetic Material Dense Network Compression Modulus Vortex Lattice 

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Copyright information

© Plenum Publishing Corporation 1994

Authors and Affiliations

  • N. B. Kopnin
    • 1
  • P. I. Soininen
    • 2
  1. 1.Centre de Recherches sur les Très Basses TemperaturesCNRSGrenoble Cedex 9France
  2. 2.Low Temperature LaboratoryHelsinki University of TechnologyEspooFinland

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