MAGNETIC-PROPERTIES OF LANIO3 FILMS AND JOSEPHSON CHARACTERISTICS OF Y1BA2CU3O7-Y/LANIO3/AU/AG/PB JUNCTIONS

被引：19

作者：

SAGOI, M

KINNO, T

YOSHIDA, J

MIZUSHIMA, K

机构：

[1] Advanced Research Laboratory, Toshiba R and D Center, Saiwai-ku, Kawasaki 210, 1, Komukai Toshiba-cho

来源：

APPLIED PHYSICS LETTERS | 1993年 / 62卷 / 15期

关键词：

D O I：

10.1063/1.109564

中图分类号：

O59 [应用物理学];

学科分类号：

摘要：

A conductive perovskite oxide, LaNiO3, has been examined for the application to the normal layer for superconductor-normal metal-superconductor junctions for the first time. LaNiO3 filMS showed resistivity as low as 1.5 X 10(-4) OMEGA cm. Pauli paramagnetism dominated in the film. The susceptibility measured was 0.9 X 10(-6) emu/Oe g. Boundaries between the Y1Ba2Cu3O7-y and LaNiO3 layers were found to be abrupt in a YBa2Cu3O7-y/LaNiO3 multilayer by transmission electron microscopy (TEM) observation. The coherence length in LaNiO3 was estimated to be 30-70 angstrom from characteristics of the Y1Ba2Cu3O7-y/LaNiO3/Au/Ag/Pb junctions. The value was comparable to the dirty limit coherence length of (hD/2pik(B)T)1/2BAR of the conventional theory (D; the diffusion constant in LaNiO3).

引用

页码：1833 / 1835

页数：3

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