Noise in (double) relaxation oscillation SQUIDs

Adelerhof, Derk Jan and Flokstra, Jaap and Rogalla, Horst (1994) Noise in (double) relaxation oscillation SQUIDs. Physica B: Condensed Matter, 194-19 (1). pp. 141-142. ISSN 0921-4526

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Abstract:	We have modelled the effect of two intrinsic noise sources on the flux noise spectral density of (Double) Relaxation Oscillation SQUIDs ((D)ROSs) based on hysteretic Josephson tunnel junctions. An important noise source is the spread in the critical current of the SQUID due to thermal fluctuations. Critical current noise mainly determines the noise on the average output voltage of DROSs with high flux to voltage transfer. A second noise source is the spread in the relaxation frequency due to the random interaction between the Josephson oscillations and the relaxation oscillations during switching to the zero-voltage state. This effect can dominate the voltage noise of a ROS.
Item Type:	Article
Copyright:	© 1994 Elsevier Science
Faculty:	Science and Technology (TNW)
Research Group:	Low Temperatures - Biomagnetism (LT)
Link to this item:	http://purl.utwente.nl/publications/23808
Official URL:	http://dx.doi.org/10.1016/0921-4526(94)90400-6
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