Microwave rf SQUID integrated into a planar YBa2Cu3O7 resonator
Zhang, Y. ; Mück, M. ; Bode, M. ; Herrmann, K. ; Schubert, J. ; Zander, W. ; Braginski, A. I. ; Heiden, C.
Woodbury, NY : American Institute of Physics (AIP)
Published 1992
Woodbury, NY : American Institute of Physics (AIP)
Published 1992
| ISSN: |
1077-3118
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| Source: |
AIP Digital Archive
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| Topics: |
Physics
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| Notes: |
We fabricated and characterized microwave rf SQUIDs integrated into a planar, S-shaped λ/2 microstrip resonator. This 3 GHz resonator was fabricated from a pulsed-laser-deposited YBa2Cu3O7 epitaxial film. The SQUID structures incorporated double step-edge junctions and had a loop inductance of 120 pH. Such unoptimized SQUIDs operated between 4.2 and 85 K with dV/dΦ=18–20 μV/Φ0 at 77 K. At that temperature, the energy resolution of (8±2)×10−29 J/Hz above 0.1 Hz (in the best samples) was limited by the white noise, SΦ1/2=(7±1)×10−5 Φ0/Hz1/2. Optimization may increase dV/dΦ and improve the energy resolution by up to an order of magnitude.
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| Type of Medium: |
Electronic Resource
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| URL: |