EPITAXIAL-GROWTH AND PROPERTIES OF YBA2CU3O7-Y/LASRGAO4/YBA2CU3O7-Y TRILAYER STRUCTURES

被引：23

作者：

HONTSU, S ^{[1
]}

MUKAI, N ^{[1
]}

ISHII, J ^{[1
]}

KAWAI, T ^{[1
]}

KAWAI, S ^{[1
]}

机构：

[1] OSAKA UNIV,INST SCI & IND RES,IBARAKI,OSAKA 567,JAPAN

来源：

APPLIED PHYSICS LETTERS | 1994年 / 64卷 / 06期

关键词：

D O I：

10.1063/1.111011

中图分类号：

O59 [应用物理学];

学科分类号：

摘要：

We report the successful synthesis of insulating LaSrGaO4(LSGO) thin films and YBa2Cu3O7-y(YBCO)/LSGO heteroepitaxial multilayer structures using a pulsed laser deposition technique. SrTiO3(STO)(100) was used as a substrate. The formation of highly c-axis oriented YBCO/LSGO/YBCO trilayer structures is demonstrated. Epitaxial YBCO films on LSGO//STO and LSGO/YBCO//STO have a zero resistance temperature of 88.5 and 88.3 K, respectively. Sandwich-type YBCO/LSGO/YBCO junctions were produced by a suitable patterning technique. The observed (dI/dV)-V characteristics exhibit a clear single gap structure (width similar to 26 meV) at temperatures below 30 K.

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页码：779 / 781

页数：3

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