Observation of magnetic flux generated spontaneously during a rapid quench of superconducting films

被引：152

作者：

Maniv, A ^{[1
]}

Polturak, E ^{[1
]}

Koren, G ^{[1
]}

机构：

[1] Technion Israel Inst Technol, Dept Phys, IL-32000 Haifa, Israel

来源：

PHYSICAL REVIEW LETTERS | 2003年 / 91卷 / 19期

基金：

以色列科学基金会;

关键词：

D O I：

10.1103/PhysRevLett.91.197001

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

We report observations of spontaneous formation of magnetic flux lines during a rapid quench of YBa2Cu3O7-delta films through T-c. This effect is predicted according to the Kibble-Zurek mechanism of creation of topological defects of the order parameter during a symmetry-breaking phase transition. Our previous experiment, at a quench rate of 20 K/s, gave null results. In the present experiment, the quench rate was increased to >10(8) K/s. The amount of spontaneous flux increases weakly with the cooling rate.

引用

页数：4

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