LOW-FIELD DIAMAGNETIC RESPONSE OF GRANULAR SUPERCONDUCTORS AT FINITE TEMPERATURES

被引：5

作者：

AULETTA, C ^{[1
]}

RAICONI, G ^{[1
]}

DELUCA, R ^{[1
]}

PACE, S ^{[1
]}

机构：

[1] UNIV SALERNO,DIPARTIMENTO FIS,I-84081 BARONISSI,ITALY

来源：

PHYSICAL REVIEW B | 1994年 / 49卷 / 17期

关键词：

D O I：

10.1103/PhysRevB.49.12311

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

We study the low-field diamagnetic response of granular superconductors at finite temperatures by means of a simple two-dimensional Josephson-junction array. The temperature effects are taken into account by inserting white-noise current sources in parallel to the resistively shunted junction circuit models of the Josephson junctions of the network. By this analysis we argue that a simplified one-dimensional description of the equivalent circuit, proposed by the authors for cylindrical granular superconductors, is still valid even in the presence of thermally activated flux jumps. A flux-creep picture for intergranular flux motion follows.

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页码：12311 / 12314

页数：4

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