Dynamics of kinematic vortices in a mesoscopic superconducting loop

  • Berdiyorov G
  • Miloević M
  • Peeters F
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Using the time-dependent Ginzburg-Landau formalism, we study the dynamic properties of a submicron superconducting loop in applied current and in presence of a perpendicular magnetic field. The resistive state of the sample is caused by the motion of kinematic vortex-antivortex pairs. Vortices and antivortices move in opposite directions to each other, perpendicularly to the applied drive, and the periodic creation and annihilation of such pairs results in periodic oscillations of the voltage across the sample. The dynamics of these kinematic pairs is strongly influenced by the applied magnetic field, which for high fields leads to the flow of just vortices. Kinematic vortices can be temporarily pinned inside the loop with observable trace in the voltage vs. time characteristics. ?? 2010 Elsevier B.V. All rights reserved.

Author-supplied keywords

  • Ginzburg-Landau theory
  • Kinematic vortex
  • Superconducting loop

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