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Complex Vortex Configuration in a Disk with a Higher/Lower Critical Temperature Superconducting Geometrical Central Defect

Authors
  • González, J. D.1
  • Barón-Jaimez, Jairo2
  • Barba-Ortega, J.3
  • 1 Universidad del Magdalena, Grupo de Teoría de la Materia Condensada, Santa Marta, Colombia , Santa Marta (Colombia)
  • 2 Universidad Nacional Autónoma de México (UNAM), Mexico, Mexico , Mexico (Mexico)
  • 3 Universidad Nacional de Colombia, Departamento de Física, Bogotá, Colombia , Bogotá (Colombia)
Type
Published Article
Journal
Journal of Low Temperature Physics
Publisher
Springer US
Publication Date
Feb 05, 2015
Volume
179
Issue
3-4
Pages
264–275
Identifiers
DOI: 10.1007/s10909-015-1279-9
Source
Springer Nature
Keywords
License
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Abstract

The influence of a pentagonal/hexagonal defect at higher/lower critical temperature in a thin superconducting disk on the critical fields and vortex configuration is investigated numerically. The coupled nonlinear Ginzburg–Landau equations are solved self-consistently to calculate and compare quantities such as the magnetization, super-current, free Gibbs energy, Cooper pair density, magnetic induction, and phase of order parameter. For certain magnetic field ranges, we found a coexistence of a giant vortex state, placed in the center of the disk and a complex multi-vortex state, toward the corners of the defect.

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