Vortex-cavity pinning force in a superconducting film

POSTER

Abstract

The interaction of a vortex with a circular perforation in a superconducting film is calculated within the Ginzburg-Landau formalism. Due to the local compression of vortex currents and their adhesion to the edge of the perforation, a local repulsive component is added to the generally attractive pinning force. The dependence of the repulsive part on the size of the cavity is examined. The associated deformation of the vortex core and its dynamics is obtained.

Authors

  • Golibjon Berdiyorov

    Departement Fysica, Universiteit Antwerpen (CGB), Belgium, Departement Fysica, Universiteit Antwerpen, Groenenborgerlaan 171, B-2020 Antwerpen, Belgium

  • Milorad Milosevic

    Departement Fysica, Universiteit Antwerpen (CGB), Belgium, Department of Physics, University of Bath, BA2 7AY, UK, Departement Fysica, Universiteit Antwerpen, Groenenborgerlaan 171, B-2020 Antwerpen, Belgium, University of Bath UK; University of Antwerp Belgium

  • Francois Peeters

    Department of Physics, University of Antwerp, Departement Fysica, Universiteit Antwerpen (CGB), Belgium, Departement Fysica, Universiteit Antwerpen, Groenenborgerlaan 171, B-2020 Antwerpen, Belgium, Universiteit Antwerpen