• DocumentCode
    961965
  • Title

    Limit characteristics of two-junction magnetic flux detector

  • Author

    Danilov, V.V. ; Likharev, K.K. ; Sniguiriev, O.V. ; Soldatov, E.S.

  • Author_Institution
    IEEE TMAG
  • Volume
    13
  • Issue
    1
  • fYear
    1977
  • fDate
    1/1/1977 12:00:00 AM
  • Firstpage
    240
  • Lastpage
    241
  • Abstract
    The sensitivity of a two-Josephson-junction interferometer as a magnetic flux detector (dc SQUID) is estimated. The minimum value of the basic SQUID characteristic-noise equivalent temperature δT = (δΦ)2/kBL appears to be as low as for the best rf SQUID mode: (\\delta T)_{\\min}/(\\Delta f)\\cong 3 T/f_{o} . Here T is an operating temperature, fois a characteristic frequency of the Josephson junctions and \\Delta f is a post-detector bandwidth. For a typical value of SQUID inductance L this limit corresponds to flux sensitivity of the order of 10-7Φo/Hz1/2.
  • Keywords
    Josephson device measurement applications; Magnetic measurements; Circuit noise; Differential amplifiers; Frequency; Josephson junctions; Magnetic flux; Noise reduction; Radiofrequency amplifiers; SQUIDs; Temperature; Voltage;
  • fLanguage
    English
  • Journal_Title
    Magnetics, IEEE Transactions on
  • Publisher
    ieee
  • ISSN
    0018-9464
  • Type

    jour

  • DOI
    10.1109/TMAG.1977.1059413
  • Filename
    1059413
    • Link To Document
    https://search.isc.ac/dl/search/defaultta.aspx?DTC=49&DC=961965