YBACUO NORMAL METAL YBACUO PROXIMITY EFFECT JUNCTIONS

被引:9
作者
GHYSELEN, B
CABANEL, R
TYC, S
CRETE, DG
BARBER, ZH
EVETTS, JE
BENASSAYAG, G
GIERAK, J
SCHUHL, A
机构
[1] CNRS,LAB L2M,F-92220 BAGNEUX,FRANCE
[2] UNIV CAMBRIDGE,DEPT MAT SCI & MET,CAMBRIDGE CB2 3QZ,ENGLAND
来源
PHYSICA C | 1992年 / 198卷 / 3-4期
关键词
D O I
10.1016/0921-4534(92)90194-H
中图分类号
O59 [应用物理学];
学科分类号
摘要
We have fabricated planar YBaCuO bridge type SNS junctions using a focused ion beam micromachining technique, where N is a classical normal metal such as gold or silver. Although in-situ fabrication is used, high contact resistivities are currently obtained with a nearly flat temperature dependence below the T(c) of the superconductor. A clear effect of the orientation of the f films is seen, and best results are obtained when the current flow is not perpendicular to the CuO planes. For the SNS junctions, a low R(n)I(c) product, in the mu-V range, has been obtained. A good quality of the interface is required to obtain SNS bridge type junctions; we show that it corresponds to a contact resistivity less than some 10(-8) OMEGA-cm2.
引用
收藏
页码:215 / 221
页数:7
相关论文
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