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| Content Provider | IEEE Xplore Digital Library |
|---|---|
| Author | Irie, A. Hamasaki, K. Yamashita, T. Matsui, T. Komiyama, B. |
| Copyright Year | 1965 |
| Abstract | High-gain DC SQUIDs using NbN nanobridges have been fabricated for magnetometers with high sensitivity, and their device parameters and intrinsic energy sensitivity have been evaluated. The slit inductance of the square washer SQUID was reduced by using the coplanar edge structure of the low inductance. The junction capacitance is typically 15 approximately 40 fF. The maximum voltage modulation is about 110 mu V for the NbN nanobridge SQUID with an inductance of 0.18 nH. The maximum value of the transfer function mod delta V/ delta Phi mod was approximately 1 mV/ Phi /sub 0/, without matching circuit. The minimum intrinsic energy sensitivity is about 20 h at 50 kHz. The SQUID was operated in a usual flux-locked loop. The flux noise spectrum for a DC SQUID at 4.2 K in a superconducting Nb shield was 4*10/sup -5/ Phi /sub 0/ mod square root Hz at 3 kHz and one order larger than the intrinsic flux noise. The critical current and mod delta V/ delta Phi mod of these SQUIDs show no change after repeated thermal recycling and storage over 250 days. |
| Sponsorship | IEEE Magnetics Society |
| Starting Page | 2967 |
| Ending Page | 2970 |
| Page Count | 4 |
| File Size | 421821 |
| File Format | |
| ISSN | 00189464 |
| Volume Number | 27 |
| Issue Number | 2 |
| Language | English |
| Publisher | Institute of Electrical and Electronics Engineers, Inc. (IEEE) |
| Publisher Date | 1991-03-01 |
| Publisher Place | U.S.A. |
| Access Restriction | One Nation One Subscription (ONOS) |
| Rights Holder | Institute of Electrical and Electronics Engineers, Inc. (IEEE) |
| Subject Keyword | SQUID magnetometers Inductance Superconducting device noise Nanoscale devices Capacitance Voltage Transfer functions Circuit noise Niobium Critical current |
| Content Type | Text |
| Resource Type | Article |
| Subject | Electronic, Optical and Magnetic Materials Electrical and Electronic Engineering |
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