DISSIPATION MECHANISM IN A HIGH-TC GRANULAR SUPERCONDUCTOR - APPLICABILITY OF A PHASE-SLIP MODEL

被引：84

作者：

WRIGHT, AC ^{[1
]}

ZHANG, K ^{[1
]}

ERBIL, A ^{[1
]}

机构：

[1] GEORGIA INST TECHNOL, SCH PHYS, ATLANTA, GA 30332 USA

来源：

PHYSICAL REVIEW B | 1991年 / 44卷 / 02期

关键词：

D O I：

10.1103/PhysRevB.44.863

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

The magnetoresistance and I-V characteristics for the 110-K phase of a polycrystalline Bi-Pb-Sr-Ca-Cu-O superconductor are reported. The Josephson-junction model of Ambegaokar and Halperin fits well to the data and yields the temperature and field dependence of the phase-slip activation energy U0. The field dependence of U0 is explained by Fraunhofer interference under magnetic field within weak links originated from the sample microstructure. We suggest that this model may have general applicability to dissipation in both granular and single-crystal materials.

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页码：863 / 866

页数：4

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