Shapiro steps observed in a dc superconducting quantum interference device with multiple junctions in each arm

被引：5
作者：
Chen, L
Chen, P
Ong, CK
机构：
[1] Natl Univ Singapore, Ctr Superconducting & Magnet Mat, Singapore 119260, Singapore
[2] Natl Univ Singapore, Dept Phys, Singapore 119260, Singapore
来源：
APPLIED PHYSICS LETTERS | 2002年 / 80卷 / 06期
关键词：
D O I：
10.1063/1.1447598
中图分类号：
O59 [应用物理学];
学科分类号：
摘要：
A high-T-c dc superconducting quantum interference device (SQUID) with three Josephson junctions (JJs) in series in each of its arms has been fabricated. Its Shapiro steps were studied using microwave (rf) radiation of 10 GHz and weak magnetic fields. The appearance of giant Shapiro steps and of some of half-integer steps was observed. Separation between the adjacent Shapiro steps could be tuned by rf magnetic fields and small external dc magnetic fields. This phenomenon was analyzed by phase locking the JJs in the SQUID. (C) 2002 American Institute of Physics.
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页码：1025 / 1027
页数：3
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