Anomaly in Normal Resistance of YBCO/La1-xCaxMnOz/YBCO High-Tc Junctions

被引：1

作者：

Kasai, M. ^{[1
]}

Satoh, T. ^{[1
]}

Kanke-Itoh, Y. ^{[1
]}

Kozono, Y. ^{[1
]}

机构：

[1] Hitachi Ltd, Hitachi Res Lab, Hitachi, Ibaraki 31912, Japan

来源：

PHYSICA C-SUPERCONDUCTIVITY AND ITS APPLICATIONS | 1994年 / 235-40卷

关键词：

D O I：

10.1016/0921-4534(94)91176-2

中图分类号：

O59 [应用物理学];

学科分类号：

摘要：

In order to investigate normal state of semiconducting magnetic manganese oxide La1-x CaxMnOz(LCMO), AC impedance measurement Au/LCMO(25-100 nm)/YBCO junction was demonstrated. The junction resistance of the Au/LCMO/YBCO increased as temperature was lowered, and no anomaly in the normal resistance was observed in opposition to YBCO/LCMO/YBCO junctions. Capacitance measurement revealed that the junction resistance is ascribed to the barrier material itself, not to contribution of Schottky barrier at Au/LCMO interface. The results showed that anomaly in the normal state occurs only in the YBCO/LCMO/YBCO junctions, and therefore proximity effect between YBCO and LCMO cannot be explained by diffusion of Cooper-pairs from YBCO.

引用

页码：3299 / 3300

页数：2

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