Voltage-time curve in an aniquilation-creation vortex-antivortex process
Curva voltaje-tiempo en un proceso aniquilación-creación de pares vórtice-antivórtice
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In this contribution we study the electrical response of the creation-annihilation kinematics vortexs in a superconducting film in the presence of an external current and a null magnetic field. The film is in contact with different types of materials simulated via the deGennes extrapolation parameter ; also it has a small metallic region located at a distance from its center. We use the time-dependent Ginzburg-Landau theory to describe the voltage variation as a function of time for a kinematic vortex creation-annihilation process considering various positions of the metallic defect and deGnnes parameter. Our research shows that the critical currents, amplitude and frequency of the oscillations in the curve strongly depend on the deGennes parameter and the position of the defect in the sample.
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