Abstract
Vortex configurations are studied in thin superconducting type II disks with finite Λ = 2 λ 2/ d (where d and λ are the disk thickness and the London penetration depth), with an external magnetic field applied parallel to the disk symmetry axis. The screening currents were obtained numerically within the London approach. The Pearl vortex interaction was approximated by ∼1/ r( r + Λ), which allows to treat the boundary condition by adding a vortex image outside the disk. Stable vortex configurations were obtained by numerically integrating the Bardeen–Stephen equation of motion. For decreasing magnetic field different sequences of vortex states develop, which depend on the R/ Λ ( R is the disk radius). Moreover, the distribution of vortices does not seem to show a strong dependence on R.
Published Version
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