OBSERVATION OF JOSEPHSON SELF-COUPLING IN NB/ALOX/NB TUNNEL-JUNCTIONS

被引：11
|
作者：
MAEZAWA, M
AOYAGI, M
NAKAGAWA, H
KUROSAWA, I
TAKADA, S
机构：
[1] Electrotechnical Laboratory, Tsukuba, Ibaraki 305
来源：
PHYSICAL REVIEW B | 1994年 / 50卷 / 13期
关键词：
D O I：
10.1103/PhysRevB.50.9664
中图分类号：
T [工业技术];
学科分类号：
08 ;
摘要：
We present the observation of Josephson self-coupling in Nb/AlO(x)/Nb tunnel junctions. In current-voltage characteristics, anomalous subharmonic gap structures were observed; steep current steps and peaks which were sensitive to the magnetic field appeared at the voltages of 2DELTA/3e and 2DELTA/5e. The characteristics of these structures could not be explained by multiparticle tunneling and/or multiple Andreev reflection. We conclude that the structures at 2DELTA/3e and 2DELTA/5e are due to Josephson self-coupling.
引用
收藏
页码：9664 / 9667
页数：4
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