Revista UIS Ingenierías

Vol. 22 No. 2 (2023): Revista UIS Ingenierías
Articles

Phase diagrams J1(τ) and J1(γ) de un filme superconductor

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  • Omar Yamid Vargas ,
  • Miryam Rincón-Joya ,
  • José José Barba-Ortega
Omar Yamid Vargas
Universidad Nacional de Colombia
Miryam Rincón-Joya
Universidad Nacional de Colombia
José José Barba-Ortega
Universidad Nacional de Colombia
DOI: https://doi.org/10.18273/revuin.v22n2-2023005

Published 2023-04-06

Keywords

  • Ginzburg-Landau,
  • mesoscopic,
  • superconductor,
  • kinematic vortices

How to Cite

Vargas , O. Y., Rincón-Joya , M. ., & Barba-Ortega, J. J. (2023). Phase diagrams J1(τ) and J1(γ) de un filme superconductor. Revista UIS Ingenierías, 22(2), 57–64. https://doi.org/10.18273/revuin.v22n2-2023005

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Abstract

In this contribution we use the time-dependent Ginzburg-Landau theory in the presence of currents and at zero magnetic fields, to investigate the kinematic vortices dynamics in a mesoscopic superconducting sheet with a thin central pillar. Our study covers two cases: (a) a central pillar whose height, simulated via  T>1;0 parameter, is varied with a superconducting-vacuum interface throughout the whole sample. simulated via γ = 1;0 parameter; (b) a central pillar with a superconducting-superconducting boundary condition at the highest critical temperature Tc, (γ > 1;0); we also considered a homogeneous sample, that is, without a pillar T= 1;0. We analyze the influence of different boundary conditions on the kinematic vortex state and its effects on the magnetic response by analyzing the current-voltage and resistivity-current curves; the rate of annihilation of the vortex-antivortex pairs is also calculated as a function of the applied current for various boundary conditions. The results show that the critical currents and dynamics of kinematic vortex annihilation are highly dependent on pillar height and boundary conditions.

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