Resumo

GONZALEZ-ACOSTA, J; AGUILAR-SIADO, J  e  BARBA-ORTEGA, J. Controlled Manipulation of Vortices in 3D/2D Superconducting Samples. Ciencia en Desarrollo [online]. 2014, vol.5, n.2, pp.125-130. ISSN 0121-7488.

It is well-known that the time dependent Ginzburg-Landau theory is a reliable theoretical tool to investigate the Shubnikov state in a superconductor sample in presence of an external applied magnetic field. In this work, we solved the system of the Ginzburg-Landau equations in two and three dimensions for two particular cases: For a parallelepiped with volume Vp; with transversal area Sp = 9ξ ²(0), 36ξ ²(0) and height hp = 1ξ (0),6ξ (0), where ξ (0) is the coherence length. In the other hand, for a thin disk with a centered circular and triangular defect, with topology of dot/anti-dot. In both cases are immersed into a homogeneous magnetic field. The effects of pinning/anti-pinning forces due to defects in the disk and demagnetization effects due to the finite size of the parallelepiped on configuring vortices and critical fields are discussed. In the tridimensional case, the magnetic field and the order parameter are not invariant along the direction z.

Palavras-chave : Ginzburg-Landau; Mesoscopic System; Vortices.

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