DIRECT OBSERVATION OF THE CRITICAL STATE FIELD PROFILE IN A YBA2CU3O7-Y SINGLE-CRYSTAL

被引：37

作者：

TAMEGAI, T ^{[1
]}

KRUSINELBAUM, L ^{[1
]}

CIVALE, L ^{[1
]}

SANTHANAM, P ^{[1
]}

BRADY, MJ ^{[1
]}

MASSELINK, WT ^{[1
]}

HOLTZBERG, F ^{[1
]}

FEILD, C ^{[1
]}

机构：

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

来源：

PHYSICAL REVIEW B | 1992年 / 45卷 / 14期

关键词：

D O I：

10.1103/PhysRevB.45.8201

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

We report direct imaging of the critical state in a YBa2Cu3O7-y single crystal. The self-field profiles are obtained by mechanically scanning a high-spatial-resolution Hall-probe array above the crystal surface. The measured field distributions confirm Bean's assumption of homogeneity, setting the relevant length scale for the evaluation of the critical currents as the sample size, and are a proof against the weak-link behavior in such crystals.

引用

页码：8201 / 8204

页数：4

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