Stability of vortex-antivortex molecules in mesoscopic superconducting triangles

摘要

Thermodynamically stable vortex-antivortex configurations have been found in mesoscopic type I superconducting equilateral triangles. The revealed effect is explained by two factors: (i) vortex confinement in mesoscopic triangles and (ii) appearance of the vortex-antivortex repulsion in mesoscopic type I superconductor triangles in the vicinity of the dual point. The stability of the obtained solutions is examined as a function of material and external parameters-the Ginzburg-Landau parameter K and temperature-as well as a function of a distortion of the sample's shape. (C) 2004 Elsevier B.V. All rights reserved.