II. Applications of the Josephson Effect
II. Applications of the Josephson Effect
II. Applications of the Josephson Effect
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R. Gross, A. Marx, and F. Deppe © Wal<strong>the</strong>r-Meißner-Institut (2001 - 2013)<br />
4.1.4 Practical dc-SQUIDs<br />
low-T c dc-SQUIDs:<br />
- multilayer thin film technology<br />
- high plasma frequency (high J c )<br />
- small junctions<br />
( small capacitance)<br />
- Nb/AlO x /Nb technology<br />
specific problem: capacitance between spiral input coil and square washer<br />
LC resonances excess noise<br />
AS-Chap. 4 - 27
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