Burning of high T-c bridges

被引：7

作者：

Gaevski, ME ^{[1
]}

Johansen, TH ^{[1
]}

Galperin, Y ^{[1
]}

Bratsberg, H ^{[1
]}

Bobyl, AV ^{[1
]}

Shantsev, DV ^{[1
]}

Karmanenko, SF ^{[1
]}

机构：

[1] LENINGRAD STATE TECH UNIV, ST PETERSBURG 195251, RUSSIA

来源：

APPLIED PHYSICS LETTERS | 1997年 / 71卷 / 21期

关键词：

D O I：

10.1063/1.120272

中图分类号：

O59 [应用物理学];

学科分类号：

摘要：

Burning of superconducting thin film bridges by large transport currents (up to densities of 2 x 10(7) A/cm(2)) is investigated by magneto-optical imaging of flux distribution and low-temperature scanning electron microscopy providing T-c maps. It is shown that the destruction is preceded by significant penetration of magnetic field inside a weak-pinning region. In bridges containing extended defects magneto-optic investigation is sufficient to locate the incipient burning region. In high-quality bridges free from such defects only a combination of the two techniques will allow prediction of the place of fatal destruction. (C) 1997 American Institute of Physics.

引用

页码：3147 / 3149

页数：3

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