Vortex-Antivortex annihilation dynamics in a square mesoscopic superconducting cylinder

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dc.creatorSardella, Edson
dc.creatorFilho, Paulo Noronha Lisboa
dc.creatorSilva, Clécio C. de Souza
dc.creatorCabral, Leonardo Ribeiro Eulálio
dc.creatorOrtiz, Wilson Aires
dc.date2009-01-13
dc.date.accessioned2026-07-07T12:29:01Z
dc.date.available2026-07-07T12:29:01Z
dc.descriptionThe dynamics of the annihilation of a vortex-antivortex pair is investigated. The pair is activated magnetically during the run of a simulated hysteresis loop on a square mesoscopic superconducting cylinder with an antidot inserted at its center. We study the nucleation of vortices and antivortices by first increasing the magnetic field, applied parallel to the axis of the sample, from zero until the first vortex is created. A further increase of the field pulls the vortex in, until it reaches the antidot. As the polarity of the field is reversed, an antivortex enters the scene, travels toward the center of the sample and eventually the pair is annihilated. Depending on the sample size, its temperature, and Ginzburg-Landau parameter, the vortex-antivortex encounter takes place at the antidot or at the superconducting sea around it. The position and velocity of the vortex and antivortex singularities were evaluated as a function of time. The current density, magnetization and order parameter topology were also calculated.
dc.descriptionOne REVTeX file and 5 EPS figures
dc.identifierhttps://arxiv.org/abs/0901.1829
dc.identifierhttp://arxiv.org/abs/0901.1829
dc.identifier.urihttp://salesiana.dossiersoluciones.com/handle/123456789/215737
dc.subjectSuperconductivity
dc.titleVortex-Antivortex annihilation dynamics in a square mesoscopic superconducting cylinder
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