NANOSECOND MAGNETOOPTIC STUDY OF A NEW INSTABILITY IN THIN YBA2CU3O7-X FILMS

被引：24

作者：

BUJOK, V

BRULL, P

BONEBERG, J

HERMINGHAUS, S

LEIDERER, P

机构：

[1] Fakultät für Physik, Universität Konstanz

来源：

APPLIED PHYSICS LETTERS | 1993年 / 63卷 / 03期

关键词：

D O I：

10.1063/1.110009

中图分类号：

O59 [应用物理学];

学科分类号：

摘要：

We have investigated the dynamics of flux penetration into thin superconducting YBa2Cu3O7-x films using a magneto-optic technique with nanosecond time resolution. For films carrying large shielding currents an instability in the magnetic flux distribution is discovered, which can be triggered by a local perturbation, e.g., by a focused laser pulse. The instability develops in the form of fine ramified flux structures, with a propagation speed of the flux front on the order of 5 x 10(4) m/s.

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收藏

页码：412 / 414

页数：3

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