Modulation depth of series SQUIDs modified by Josephson junction area

doi:10.1088/1674-1056/26/9/098501

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	Modulation depth of series SQUIDs modified by Josephson junction area
	Ahmada, K; Li, G; Gao, H; Gao H(高鹤); Liu, J; Li ZW(李正伟); Chen, W; Liu, JS; Shan, ZY; Li, ZW
刊名	CHINESE PHYSICS B中国物理. B
	2017
卷号	26 期号:9 页码:98501
关键词	superconducting quantum interference device (SQUID) Josephson junction transition edge sensor
ISSN号	1674-1056
DOI	10.1088/1674-1056/26/9/098501
文献子类	Article
英文摘要	The superconducting quantum interference device (SQUID) amplifier is widely used in the field of weak signal detection for its low input impedance, low noise, and low power consumption. In this paper, the SQUIDs with identical junctions and the series SQUIDs with different junctions were successfully fabricated. The Nb/Al-AlOx/Nb trilayer and input Nb coils were prepared by asputtering equipment. The SQUID devices were prepared by a sputtering and the lift-off method. Investigations by AFM, OM and SEM revealed the morphology and roughness of the Nb films and Nb/Al-AlOx/Nb trilayer. In addition, the current-voltage characteristics of the SQUID devices with identical junction and different junction areas were measured at 2.5 K in the He-3 refrigerator. The results show that the SQUID modulation depth is obviously affected by the junction area. The modulation depth obviously increases with the increase of the junction area in a certain range. It is found that the series SQUID with identical junction area has a transimpedance gain of 58 Omega approximately.
电子版国际标准刊号	1741-4199
WOS关键词	DC SQUID ; ELECTROTHERMAL FEEDBACK
WOS研究方向	Physics
语种	英语
CSCD记录号	CSCD:6131475
WOS记录号	WOS:000409485800001
内容类型	期刊论文
源URL	[http://ir.ihep.ac.cn/handle/311005/284742]
专题	高能物理研究所_粒子天体物理中心
作者单位	中国科学院高能物理研究所
推荐引用方式 GB/T 7714	Ahmada, K,Li, G,Gao, H,et al. Modulation depth of series SQUIDs modified by Josephson junction area[J]. CHINESE PHYSICS B中国物理. B,2017,26(9):98501.
APA	Ahmada, K.,Li, G.,Gao, H.,高鹤.,Liu, J.,...&Li, ZW.(2017).Modulation depth of series SQUIDs modified by Josephson junction area.CHINESE PHYSICS B中国物理. B,26(9),98501.
MLA	Ahmada, K,et al."Modulation depth of series SQUIDs modified by Josephson junction area".CHINESE PHYSICS B中国物理. B 26.9(2017):98501.