We study vortex current distributions in narrow thin-film superconducting strips. If one defines the vortex core ``boundary" as a curve where the current reaches the depairing value, intriguing features emerge. Our conclusions based on the London approach have only qualitative relevance since the approach breaks down near the core. Still, the main observation which might be useful is that the core size near the strip edges is smaller than in the rest of the strip. If so, the Bardeen-Stephen flux-flow resistivity should be reduced near the edges. Moreover, at elevated temperatures, when the depairing current is small, the vortex core may extend to the whole strip width, thus turning into an edge-to-edge phase-slip line.

中文翻译：

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窄薄膜条带中的涡核

我们研究窄薄膜超导带中的涡流分布。如果将涡核“边界”定义为电流达到分离值的曲线，就会出现有趣的特征。我们基于伦敦方法的结论仅具有定性相关性，因为该方法在核附近失效。不过，主要观察结果可能有用的是，靠近带钢边缘的磁芯尺寸小于带钢其余部分的尺寸。如果是这样，靠近边缘的 Bardeen-Stephen 通量流动电阻率应该降低。此外，在升高的温度下，当电流较小时，涡核可能会延伸到整个带宽，从而变成边到边的相滑线。