Transitions between different superconducting states in mesoscopic disks

Abstract

Using a linear analysis, we study the stability of giant-vortex states in very thin disks. The vortex expulsion and penetration fields are obtained for finite thickness disks from a numerical solution of the non-linear Ginzburg-Landau (GL) equations. Using an extension of the London approximation, in which the phase distribution of the order parameter is prescribed and the superconducting electron density is found numerically, we consider the free energy behavior for transitions between different superconducting states.

8 pages, 5 figures Accepted for publication in Physica C

References in corpus (1)

• Flux penetration and expulsion in thin superconducting disks

Cited by in corpus (9)

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• Multi-vortex states of a thin superconducting disk in a step-like external magnetic field
• Mesoscopic superconductors in the London limit: equilibrium properties and metastability
• Giant vortices in the Ginzburg-Landau description of superconductivity
• Spontaneous breaking of axial symmetry for Schroedinger's equation in the presence of a magnetic field