INTERDISCIPLINARY PHYSICS AND RELATED AREAS OF SCIENCE AND TECHNOLOGY |
Prev
Next
|
|
|
Superconducting quantum interference devices with different damped junctions operated in directly coupled current- and voltage-bias modes |
Zeng Jia (曾佳)a b c d, Zhang Yi (张懿)b c, Qiu Yang (邱阳)a c d, Zhang Guo-Feng (张国峰)a c, Wang Yong-Liang (王永良)a c, Kong Xiang-Yan (孔祥燕)a c, Xie Xiao-Ming (谢晓明)a c |
a State Key Laboratory of Functional Materials for Informatics, Shanghai Institute of Microsystem and Information Technology, Chinese Academy of Sciences, Shanghai 200050, China;
b Peter Grünberg Institute (PGI-8), Forschungszentrum Jülich (FZJ), D-52425 Jülich, Germany;
c Joint Research Laboratory on Superconductivity and Bioelectronics, Collaboration between CAS-Shanghai, Shanghai 200050, China and FZJ, D-52425 Jülich Germany;
d University of Chinese Academy of Sciences, Beijing 100049, China |
|
|
Abstract We investigate niobium thin film superconducting quantum interference devices (SQUIDs) with different Steward-McCumber parameters βc operated in both current- and voltage-bias modes. We experimentally prove that there is no difference between the two bias modes with respect to the SQUID intrinsic noise and the noise contribution from the preamplifier. Furthermore, the relationships of the SQUID dynamic parameters, (Rd)current bias ≈ (Rd)voltage bias and (∂V/∂Φ)current bias ≈ [(∂i/∂Φ)Rd]voltage bias, are always satisfied. For a strongly damped SQUID with βc ≈ 0.25, additional positive feedback (APF) and noise cancellation (NC) were employed to enhance ∂V/∂Φ, the former showing a degradation in the linear flux range but otherwise the same with NC. For a weakly damped SQUID with βc ≈ 3, it is directly connected to the preamplifier without APF or NC, and a low SQUID system noise of about 4 μΦ 0/√Hz is measured, which is close to its intrinsic noise.
|
Received: 06 March 2014
Revised: 03 June 2014
Accepted manuscript online:
|
PACS:
|
85.25.Dq
|
(Superconducting quantum interference devices (SQUIDs))
|
|
43.50.+y
|
(Noise: its effects and control)
|
|
85.25.Hv
|
(Superconducting logic elements and memory devices; microelectronic circuits)
|
|
Fund: Project supported by the Strategic Priority Research Program (B) of the Chinese Academy of Sciences (Grant No. XDB04010100) and One Hundred Person Project of the Chinese Academy of Sciences. |
Corresponding Authors:
Kong Xiang-Yan
E-mail: xykong@mail.sim.ac.cn
|
Cite this article:
Zeng Jia (曾佳), Zhang Yi (张懿), Qiu Yang (邱阳), Zhang Guo-Feng (张国峰), Wang Yong-Liang (王永良), Kong Xiang-Yan (孔祥燕), Xie Xiao-Ming (谢晓明) Superconducting quantum interference devices with different damped junctions operated in directly coupled current- and voltage-bias modes 2014 Chin. Phys. B 23 118501
|
[1] |
Drung D and Mück M 2004 SQUID Electronics: The SQUID Handbook (Vol. 1) (Ed. Clarke J and Braginski A I) (Weinheim: Wiley-VCH) pp. 127-70
|
[2] |
Forgacs R L and Warnick A 1967 Rev. Sci. Instrum. 38 214
|
[3] |
Drung D, Cantor R, Peters M, Scheer H J and Koch H 1990 Appl. Phys. Lett. 57 406
|
[4] |
Seppä H, Ahonen A, Knuutila J, Simola J and Vilkman V 1991 IEEE Trans. Magn. 27 2488
|
[5] |
Xie X, Zhang Y, Wang H, Wang Y, Mück M, Dong H, Krause H J, Braginski A I, Offenhäusser A and Jiang M 2010 Supercond. Sci. Technol. 23 065016
|
[6] |
Wellstood F C, Urbina C and Clarke J 1987 Appl. Phys. Lett. 50 772
|
[7] |
Schmelz M, Stolz R, Zakosarenko V, Schönau T, Anders S, Fritzsch L, Mück M and Meyer H G 2011 Supercond. Sci. Technol. 24 065009
|
[8] |
Liu C, Zhang Y, Mück M, Krause H J, Braginski A I, Xie X, Offenhäusser A and Jiang M 2012 Appl. Phys. Lett. 101 222602
|
[9] |
Zeng J, Zhang Y, Mück M, Krause H J, Braginski A I, Kong X, Xie X, Offenhäusser A and Jiang M 2013 Appl. Phys. Lett. 103 042601
|
[10] |
Liu C, Zhang Y, Mück M, Zhang S, Krause H J Braginski A I, Zhang G, Wang Y, Kong X, Xie X, Offenhäusser A and Jiang M 2013 Supercond. Sci. Technol. 26 065002
|
[11] |
Qiu Y, Liu C, Zhang S, Zhang G, Wang Y, Li H, Zeng J, Kong X and Xie X 2014 Chin. Phys. B 23 088503
|
[12] |
Zhang Y, Liu C, Schmelz M, Krause H J, Braginski A I, Stolz R, Xie X, Meyer H G, Offenhäusser A and Jiang M 2012 Supercond. Sci. Technol. 25 125007
|
[13] |
Zeng J, Zhang Y, Mück M, Krause H J, Braginski A I, Kong X, Xie X, Offenhäusser A and Jiang M 2013 Appl. Phys. Lett. 103 122605
|
[14] |
Voss R F 1981 J. Low Temp. Phys. 42 151
|
[15] |
Drung D and Jutzi W 1985 IEEE Trans. Magn. 21 430
|
No Suggested Reading articles found! |
|
|
Viewed |
|
|
|
Full text
|
|
|
|
|
Abstract
|
|
|
|
|
Cited |
|
|
|
|
Altmetric
|
blogs
Facebook pages
Wikipedia page
Google+ users
|
Online attention
Altmetric calculates a score based on the online attention an article receives. Each coloured thread in the circle represents a different type of online attention. The number in the centre is the Altmetric score. Social media and mainstream news media are the main sources that calculate the score. Reference managers such as Mendeley are also tracked but do not contribute to the score. Older articles often score higher because they have had more time to get noticed. To account for this, Altmetric has included the context data for other articles of a similar age.
View more on Altmetrics
|
|
|