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Title: Improving high-TC dc SQUID performance by means of junction asymmetry
Authors: Sinha, Urbasi
Sinha, Aninda
Wilhelm, Frank K.
Issue Date: Jun-2009
Publisher: Institute of Physics
Citation: Superconductor Science and Technology, 2009, Vol.22, p055002
Abstract: We study noise and noise energy of a high- TC dc SQUID (superconducting quantum interference device) fabricated on a high- epsilonR substrate whose conduction properties are given by transmission line physics. We show that transmission line resonances greatly enhance the noise. Remarkably, resistance asymmetry enhances these resonances even more. However, as the transfer function (\frac {\rmd v_{\mathrm {dc}}}{\rmd \phi } ) scales the same way, the noise energy is reduced by asymmetry, greatly enhancing the flexibility and performance of the SQUID.
Description: Restricted Access. An open-access version is available at (one of the alternative locations)
ISSN: 0953-2048
1361-6668 (online)
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Copyright: 2009 Institute of Physics
Appears in Collections:Research Papers (LAMP)

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