Semi-Meissner state and non-pairwise intervortex interactions in type-1.5 superconductors

Abstract

We demonstrate existence of non-pairwise interaction forces between vortices in multicomponent and layered superconducting systems. That is, in contrast to most common models, the interactions in a group of such vortices is not a universal superposition of Coulomb or Yukawa forces. Next we consider the properties of vortex clusters in Semi-Meissner state of type-1.5 two-component superconductors. We show that under certain condition non-pairwise forces can contribute to formation of very complex vortex states in type-1.5 regimes.

v2: replaced with version to appear in Phys.Rev. B. Substantially exteded, title changed. Animation of the vortex clusters formation in type-1.5 superconductors is available at http://people.umass.edu/garaud/NonPairwise.html

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