Current percolation and the V-I transition in YBa2Cu3O7 bicrystals and granular coated conductors

被引：28

作者：

Evetts, JE ^{[1
]}

Hogg, MJ

Glowacki, BA

Rutter, NA

Tsaneva, VN

机构：

[1] Univ Cambridge, Dept Mat Sci, Cambridge CB2 3QZ, England

[2] Univ Cambridge, Irc Superconduct, Cambridge CB2 3QZ, England

来源：

SUPERCONDUCTOR SCIENCE & TECHNOLOGY | 1999年 / 12卷 / 12期

关键词：

D O I：

10.1088/0953-2048/12/12/303

中图分类号：

O59 [应用物理学];

学科分类号：

摘要：

There is considerable interest in the dynamics of vortices in granular 'coated conductors' consisting of a 2D network of low angle grain boundaries (LAGBs). The V-l characteristic of the conductor is determined by a combination of flux vortex channelling along the grain boundaries and current percolation within the grain network. In this work it is shown that measurements of viscous flow for a YBa2Cu3O7 bicrystal LAGB can be applied in a statistical model that predicts the characteristic V-I response for a particular grain-to-grain dispersion of grain boundary angles.

引用

页码：1050 / 1053

页数：4

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