Vortices in a mesoscopic superconducting circular sector

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Sardella, Edson
Lisboa-Filho, Paulo Noronha
Malvezzi, Andre Luiz
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Abstract
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In the present paper we develop an algorithm to solve the time dependent Ginzburg-Landau (TDGL) equations, by using the link variables technique, for circular geometries. In addition, we evaluate the Helmholtz and Gibbs free energy, the magnetization, and the number of vortices. This algorithm is applied to a circular sector. We evaluate the superconduting-normal magnetic field transition, the magnetization, and the superconducting density. Furthermore, we study the nucleation of giant and multi-vortex states for that geometry.
Comment: One REVTeX file and 8 figures
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Condensed Matter - Superconductivity
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