RESISTIVITY ANISOTROPY AND JOSEPHSON COUPLING IN LEAD-SUBSTITUTED BISMUTH CUPRATES

被引：11

作者：

REGI, FX ^{[1
]}

SCHNECK, J ^{[1
]}

SAVARY, H ^{[1
]}

MELLET, R ^{[1
]}

MULLER, P ^{[1
]}

KLEINER, R ^{[1
]}

机构：

[1] WALTHER MEISSNER INST TIEFTEMP FORSCH, W-8046 GARCHING, GERMANY

来源：

JOURNAL DE PHYSIQUE III | 1994年 / 4卷 / 11期

关键词：

D O I：

10.1051/jp3:1994270

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

We report experimental results showing that the increase of the lead-substitution in Bi-2:2:1:2 single crystals can offer the possibility to reduce the anisotropy. The strengthening of the binding forces between adjacent Bi-O planes, induced by lead-substitution, is confirmed by new results about iodine intercalation. In the normal phase, the lead-substitution has the effect to decrease the resistivity along the c-direction by a factor as high as 60. In the superconducting phase, it increases the Josephson coupling between the layers, resulting in high densities of critical current along the c-axis, up to 5 000 A/cm2 and two-state hysteretic I-V characteristics without intermediate branches.

引用

页码：2249 / 2257

页数：9

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