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    Stochastic resonance in an RF SQUID with shunted ScS junction

    195523_195523.pdf (290.9Kb)
    Access Status
    Open access
    Authors
    Turutanov, O.
    Golovanevskiy, Vladimir
    Lyakhno, V.
    Shnyrkov, V.
    Date
    2013
    Type
    Journal Article
    
    Metadata
    Show full item record
    Citation
    Turutanov, O.G. and Golovanevskiy, V.A. and Lyakhno, V.Yu. and Shnyrkov, V.I. 2013. Stochastic resonance in an RF SQUID with shunted ScS junction. Physica A: Statistical Mechanics and its Applications. 396: pp. 1-8.
    Source Title
    Physica A: Statistical Mechanics and its Applications
    DOI
    10.1016/j.physa.2013.11.005
    ISSN
    0378-4371
    Remarks

    NOTICE: This is the author’s version of a work that was accepted for publication in Physica A: Statistical Mechanics and its Applications. Changes resulting from the publishing process, such as peer review, editing, corrections, structural formatting, and other quality control mechanisms may not be reflected in this document. Changes may have been made to this work since it was submitted for publication. A definitive version was subsequently published in Physica A: Statistical Mechanics and its Applications, Vol. 396 (2013). doi: 10.1016/j.physa.2013.11.005

    URI
    http://hdl.handle.net/20.500.11937/42200
    Collection
    • Curtin Research Publications
    Abstract

    Using a point (superconductor–constriction–superconductor, ScS) contact in a single-Josephson-junction superconducting quantum interference device (RF SQUID) provides stochastic resonance conditions at any arbitrary small value of loop inductance and contact critical current, unlike SQUIDs with more traditional tunnel (superconductor–insulator–superconductor, SIS) junctions. This is due to the unusual potential energy of the ScS RF SQUID which always has a barrier between two wells, thus making the device bistable. This paper presents the results of a numerical simulation of the stochastic dynamics of the magnetic flux in an ScS RF SQUID loop affected by band-limited white Gaussian noise and low-frequency sine signals of small and moderate amplitudes. The difference in stochastic amplification of RF SQUID loops incorporating ScS and SIS junctions is discussed.

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