Effect of a transversal channel on the vortex-antivortex state in a superconducting film
Abstract
In this work, the resistive state of a mesoscopic superconducting sample in presence of an external transport electric current, Ja, and at zero magnetic field was studied. A non-centered channel of depleted superconductivity (of width m and at lower critical temperature Tc) is positioned at a distance d of the center of the sample. We vary the width a of the metallic contact in which the external current is applied. We study the superconducting electronic density, the vortex-antivortex velocity, and the annihilation rates of the supercurrent for several widths of the metallics contacts and position of the channel. Our investigation show that critical currents and the velocity of the v − Av of the studied system depend strongly on the size of the contact and of the position of the channel in the sample.
Keywords
Ginzburg-Landau, Kinematic vortex, Mesoscopics, Superconductor
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