Design, fabrication and evaluation of a four-Josephson-junction superconducting quantum interference device with two superconducting loops

被引：3
|
作者：
Morooka, T
机构：
来源：
JAPANESE JOURNAL OF APPLIED PHYSICS PART 2-LETTERS & EXPRESS LETTERS | 1997年 / 36卷 / 12A期
关键词：
4JJ-SQUID; modulated voltage; superconducting loop; RSJ model; conventional DC-SQUID;
D O I：
10.1143/JJAP.36.L1587
中图分类号：
O59 [应用物理学];
学科分类号：
摘要：
We developed a four-Josephson-junction superconducting quantum interference device (4JJ-SQUID) with a large modulated voltage to realize a highly sensitive magnetic sensor. This letter describes the design and fabrication, and discusses the potential and the performance of the 4JJ-SQUID. The 4JJ-SQUID was fabricated using Nb/Al-AlOx/Nb tunnel junctions. The SQUID consists of two pairs of Josephson junctions that form two superconducting loops via a shared washer coil. We confirmed using both calculation and experiment that the SQUID had a higher magnetic sensitivity than that of a conventional DC-SQUID.
引用
收藏
页码：L1587 / L1590
页数：4
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