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 />
4.2.2 Operation and Performance <strong>of</strong> rf SQUIDs<br />
AS-Chap. 4 - 35<br />
for ¯L,rf > 1:<br />
©(© ext ) hysteretic<br />
total flux through SQUID:<br />
for © S + © rf > © ext,c hysteresis loop<br />
energy loss / area<br />
damping <strong>of</strong> tank circuit:<br />
minimum close to n¢© 0<br />
maximum close to (2n+1)/2¢© 0<br />
tank voltage is periodic in applied flux
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