Closed vortex state in 3D mesoscopic superconducting films under an applied transport current
Superconductivity
2023-03-22 v1
Abstract
By using the full 3D generalized time dependent Ginzbug-Landau equation we study a long superconducting film of finite width and thickness under an applied transport current. We show that, for sufficiently large thickness, the vortices and the antivortices become curved before they annihilate each other. As they approach the center of the sample, their ends combine, producing a single closed vortex. We also determine the critical values of the thickness for which the closed vortex sets in for different values of the Ginzburg-Ladau parameter. Finally, we propose a model of how to detect a closed vortex experimentally.
Keywords
Cite
@article{arxiv.2303.11401,
title = {Closed vortex state in 3D mesoscopic superconducting films under an applied transport current},
author = {Leonardo Rodrigues Cadorim and Lucas Veneziani de Toledo and Wilson Aires Ortiz and Jorge Berger and Edson Sardella},
journal= {arXiv preprint arXiv:2303.11401},
year = {2023}
}
Comments
9 pages, 10 figures, accepted for publication in Phys. Rev. B