An effective lowest Landau level treatment of demagnetization in superconducting mesoscopic disks

Details An effective lowest Landau level treatment of demagnetization in superconducting mesoscopic disks An effective lowest Landau level treatment of demagnetization in superconducting mesoscopic disks

2000-11-16

arxiv.org/abs/cond-mat/0011287v1

Physics

Condensed Matter

Superconductivity

5 pages, 4 figures, submitted to Phys. Rev. B

Scientific paper

10.1103/PhysRevB.64.134514

Demagnetization, which is inherently present in the magnetic response of small finite-size superconductors, can be accounted for by an effective $\kappa$ within a two-dimensional lowest Landau level approximation of the Ginzburg-Landau functional. We show this by comparing the equilibrium magnetization of superconducting mesoscopic disks obtained from the numerical solution of the three-dimensional Ginzburg-Landau equations with that obtained in the ``effective'' LLL approximation.

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