PROXIMITY EFFECT IN YBA2CU3O7 Y0.6PR0.4BA2CU3O7 YBA2CU3O7 JUNCTIONS

被引：97

作者：

POLTURAK, E

KOREN, G

COHEN, D

AHARONI, E

DEUTSCHER, G

机构：

[1] TECHNION ISRAEL INST TECHNOL,CROWN CTR SUPERCOND,IL-32000 HAIFA,ISRAEL

[2] TEL AVIV UNIV,DEPT PHYS & ASTRON,IL-69978 TEL AVIV,ISRAEL

来源：

PHYSICAL REVIEW LETTERS | 1991年 / 67卷 / 21期

关键词：

D O I：

10.1103/PhysRevLett.67.3038

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

We report critical-current measurements in all high-T(c) superconducting-normal-superconducting junctions using Y0.6Pr0.4Ba2Cu3O7 (with T(cN) = 40 K) as the normal metal. Above T(cN), we find a clear exponential dependence of I(c) on the thickness of the barrier which is characteristic of the proximity effect. The order-parameter decay length is about 120 angstrom for T > 60 K, and it diverges as T(cN) is approached. We estimate that zeta-0 for this material is 80 +/- 25 angstrom.

引用

页码：3038 / 3041

页数：4

共 19 条

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