超导体中自发形成的涡旋间关联的实验测定
Experimental determination of correlations between spontaneously formed vortices in a superconductor
摘要：
我们已经成像自发产生的涡流（磁通量量子）阵列，产生在超导薄膜淬火通过其转变温度在$10^9 K/s$左右的速率。从这些图像中，我们计算了两个涡和三个涡的位置关联函数。我们比较了我们的结果与时间相关的Ginzburg-Landau方程在二维模拟。结果与自发涡产生的Kibble-Zurek方案一致。此外，关联函数对规范场的存在不敏感。
英文摘要：
We have imaged spontaneously created arrays of vortices (magnetic flux quanta), generated in a superconducting film quenched through its transition temperature at rates around $10^9 K/s$. From these images, we calculated the positional correlation functions for two vortices and for 3 vortices. We compared our results with simulations of the time dependent Ginzburg Landau equation in 2D. The results are in agreement with the Kibble-Zurek scenario of spontaneous vortex creation. In addition, the correlation functions are insensitive to the presence of a gauge field.
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