Stable vortex-antivortex molecules in mesoscopic superconducting triangles.

@article{Misko2003StableVM,
  title={Stable vortex-antivortex molecules in mesoscopic superconducting triangles.},
  author={Vyacheslav R. Misko and Vladimir M. Fomin and J. T. Devreese and Victor V. Moshchalkov},
  journal={Physical review letters},
  year={2003},
  volume={90 14},
  pages={
          147003
        }
}
A thermodynamically stable vortex-antivortex pattern has been revealed in equilateral mesoscopic type I superconducting triangles, contrary to type II superconductors where similar patterns are unstable. The stable vortex-antivortex "molecule" appears due to the interplay between two factors: a repulsive vortex-antivortex interaction in type I superconductors and the vortex confinement in the mesoscopic triangle. 
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