Modulation depth of series squids modified by josephson junction area
文献类型：期刊论文
| 作者 | Liu, Jie1; Gao, He2,3; Li, Gang1; Li, Zheng Wei2; Ahmada, Kamal1; Shan, Zhang Ying1; Liu, Jian She1; Chen, Wei1 |
| 刊名 | Chinese physics b
 |
| 出版日期 | 2017-08-01 |
| 卷号 | 26期号:9页码:6 |
| ISSN号 | 1674-1056 |
| 关键词 | Superconducting quantum interference device (squid) Josephson junction Transition edge sensor |
| DOI | 10.1088/1674-1056/26/9/098501 |
| 通讯作者 | Chen, wei(weichen@tsinghua.edu.cn) |
| 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. |
| WOS关键词 | DC SQUID ; ELECTROTHERMAL FEEDBACK |
| WOS研究方向 | Physics |
| WOS类目 | Physics, Multidisciplinary |
| 语种 | 英语 |
| 出版者 | IOP PUBLISHING LTD |
| WOS记录号 | WOS:000409485800001 |
| URI标识 | http://www.irgrid.ac.cn/handle/1471x/2177004 |
| 专题 | 高能物理研究所 |
| 通讯作者 | Chen, Wei |
| 作者单位 | 1.Tsinghua Univ, Inst Microelect, Dept Microelect & Nanoelect, Tsinghua Natl Lab Informat Sci & Technol, Beijing 100084, Peoples R China 2.Chinese Acad Sci, Inst High Energy Phys, Key Lab Particle Astrophys, Beijing 100049, Peoples R China 3.Univ Chinese Acad Sci, Beijing 100049, Peoples R China |
| 推荐引用方式 GB/T 7714 | Liu, Jie,Gao, He,Li, Gang,et al. Modulation depth of series squids modified by josephson junction area[J]. Chinese physics b,2017,26(9):6. |
| APA | Liu, Jie.,Gao, He.,Li, Gang.,Li, Zheng Wei.,Ahmada, Kamal.,...&Chen, Wei.(2017).Modulation depth of series squids modified by josephson junction area.Chinese physics b,26(9),6. |
| MLA | Liu, Jie,et al."Modulation depth of series squids modified by josephson junction area".Chinese physics b 26.9(2017):6. |
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来源：高能物理研究所
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