Generation of magnetic flux by single grain boundaries of YBa2Cu3O7-x

被引：167

作者：

Mannhart, J

Hilgenkamp, H

Mayer, B

Gerber, C

Kirtley, JR

Moler, KA

Sigrist, M

机构：

[1] IBM CORP,THOMAS J WATSON RES CTR,YORKTOWN HTS,NY 10598

[2] ETH HONGGERBERG,CH-8093 ZURICH,SWITZERLAND

来源：

PHYSICAL REVIEW LETTERS | 1996年 / 77卷 / 13期

关键词：

D O I：

10.1103/PhysRevLett.77.2782

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

Using scanning SQUID microscopy, we have directly imaged spontaneously generated delocalized magnetic flux in 45 degrees [001] tilt grain boundaries in YBa2Cu3O7-x films. Implications for the transport properties of the grain boundaries are discussed. A model based on a d(x2-y2)-wave symmetry component of the superconducting order parameter and on grain-boundary faceting is consistent with the results of our experiments.

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页码：2782 / 2785

页数：4

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