论文标题
介质超导体中的超快速运动学涡流：自我场的效果
Ultra-fast Kinematic Vortices in Mesoscopic Superconductors: The Effect of the Self-Field
论文作者
论文摘要
在广义时间依赖性的金茨堡 - 兰道方程的框架内，我们研究了由施加的传输电流驱动的超导样品中电流引起的磁自场的影响。系统电阻状态的数值模拟表明，材料不均匀性和小于样品宽度的正常接触都不需要产生样品内部的不均匀电流分布，从而导致运动学涡流 - 抗速作物对（Vortex Street）解决方案。此外，我们讨论了运动涡流速度的行为，超电流的an灭速率以及涡流街解决方案旁边的超导顺序参数。我们证明，这两个点解释了系统电阻状态的特征。它们是描述当前抗性特征曲线的峰值以及形成涡流 - 抗抗差对的位置的基本基础。
Within the framework of the generalized time-dependent Ginzburg-Landau equations, we studied the influence of the magnetic self-field induced by the currents inside a superconducting sample driven by an applied transport current. The numerical simulations of the resistive state of the system show that neither material inhomogeneity nor a normal contact smaller than the sample width are required to produce an inhomogeneous current distribution inside the sample, which leads to the emergence of a kinematic vortex-antivortex pair (vortex street) solution. Further, we discuss the behaviors of the kinematic vortex velocity, the annihilation rates of the supercurrent, and the superconducting order parameters alongside the vortex street solution. We prove that these two latter points explain the characteristics of the resistive state of the system. They are the fundamental basis to describe the peak of the current-resistance characteristic curve and the location where the vortex-antivortex pair is formed.
