| INTERDISCIPLINARY PHYSICS AND RELATED AREAS OF SCIENCE AND TECHNOLOGY |
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Modulation depth of series SQUIDs modified by Josephson junction area |
| Jie Liu(刘杰)1, He Gao(高鹤)2,3, Gang Li(李刚)1, Zheng Wei Li(李正伟)2, Kamal Ahmada1, Zhang Ying Shan(张颖珊)1, Jian She Liu(刘建设)1, Wei Chen(陈炜)1 |
1 Tsinghua National Laboratory for Information Science and Technology, Department of Microelectronics and Nanoelectronics, Institute of Microelectronics, Tsinghua University, Beijing 100084, China;
2 Key Laboratory of Particle Astrophysics, Institute of High Energy Physics, Chinese Academy of Sciences, Beijing 100049, China;
3 University of Chinese Academy of Sciences, Beijing 100049, China |
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Abstract 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 He3 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 Ω approximately.
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Received: 29 March 2017
Revised: 24 May 2017
Accepted manuscript online:
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PACS:
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85.25.Cp
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(Josephson devices)
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85.25.Dq
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(Superconducting quantum interference devices (SQUIDs))
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07.20.Mc
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(Cryogenics; refrigerators, low-temperature detectors, and other low-temperature equipment)
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| Fund: Project supported by the National Natural Science Foundation of China (Grant No. 11653001), the National Basic Research Program of China (Grant No. 2011CBA00304), and Tsinghua University Initiative Scientific Research Program, China (Grant No. 20131089314). |
Corresponding Authors:
Wei Chen
E-mail: weichen@tsinghua.edu.cn
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Cite this article:
Jie Liu(刘杰), He Gao(高鹤), Gang Li(李刚), Zheng Wei Li(李正伟), Kamal Ahmada, Zhang Ying Shan(张颖珊), Jian She Liu(刘建设), Wei Chen(陈炜) Modulation depth of series SQUIDs modified by Josephson junction area 2017 Chin. Phys. B 26 098501
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| [1] |
Lee A T, Richards P L, Nam S W, Cabrera B and Irwin K 1996 Appl. Phys. Lett. 69 1801
|
| [2] |
Zhang Q Y, Wang T S, Liu J S, Dong W H, He G F, Li T F, Zhou X X and Chen W 2014 Chin. Phys. B. 23 118502
|
| [3] |
Li H, Zhang S L, Qiu Y, Zhang Y S, Zhang C X, Kong X Y and Xie X M 2015 Chin. Phys. B. 24 028501
|
| [4] |
Qiu Y, Liu C, Zhang S L, Zhang G F, Wang Y L, Li H, Zeng J, Kong X Y and Xie X M 2014 Chin. Phys. B 23 088503
|
| [5] |
Schwan D, Bertoldi F, Cho S, Dobbs M, Guesten R, Halverson N, Holzapfel W, Kreysa E, Lanting T and Lee A 2003 New Astron. Rev. 47 933
|
| [6] |
Irwin K D and Hilton G C 2005 Cryogenic Particle Detection (New York: Springer) p. 63
|
| [7] |
Irwin K 1995 Appl. Phys. Lett. 66 1998
|
| [8] |
Ullom J N and Bennett D A 2015 Supercond. Sci. Technol. 28 084003
|
| [9] |
de Korte P A, Beyer J, Deiker S, Hilton G C, Irwin K D, MacIntosh M, Nam S W, Reintsema C D, Vale L R and Huber M E 2003 Rev. Sci. Instrum. 74 3807
|
| [10] |
Irwin K, Niemack M, Beyer J, Cho H, Doriese W, Hilton G, Reintsema C, Schmidt D, Ullom J and Vale L 2010 Supercond. Sci. Technol. 23 034004
|
| [11] |
Mates J, Hilton G, Irwin K, Vale L and Lehnert K 2008 Appl. Phys. Lett. 92 023514
|
| [12] |
Chervenak J, Irwin K D, Grossman E N, Martinis J M, Reintsema C D and Huber M 1999 Appl. Phys. Lett. 74 4043
|
| [13] |
Huber M E, Neil P A, Benson R G, Burns D A, Corey A M, Flynn C S, Kitaygorodskaya Y, Massihzadeh O, Martinis J M and Hilton G 2001 IEEE T. Aaapl. Supercon. 11 1251
|
| [14] |
Prêle D, Voisin F, Piat M, Decourcelle T, Perbost C, Chapron C, Rambaud D, Maestre S, Marty W and Montier L 2016 J. Low Temp. Phys. 184 363
|
| [15] |
Tuttle J, DiPirro M, Shirron P, Welty R and Radparvar M 1996 Cryogenics 36 879
|
| [16] |
Clarke J and Braginski A I 2004 The SQUID Handbook Vol. 1 p. 34
|
| [17] |
Clarke J, Goubau W M and Ketchen M B 1976 J. Low Temp. Phys. 25 99
|
| [18] |
Tesche C D and Clarke J 1977 J. Low Temp. Phys. 29 301
|
| [19] |
Chen Z, He G F, Zhang Q Y, Liu J S, Li T F and Chen W 2015 Acta Phys. Sin. 64 128501 (in Chinese)
|
| [20] |
Weinstock H 2012 SQUID Sensors: Fundamentals, Fabrication and Applications. (Berlin: Springer Science & Business Media)
|
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