• DocumentCode
    1296467
  • Title

    High-precision resistance ratio measurements by means of a novel Josephson potentiometer

  • Author

    Warnecke, Peter ; Niemeyer, Jurgen ; Dunschede, Friedrich Wilhelm ; Grimm, Lambert ; Weimann, G. ; Schlapp, W.

  • Author_Institution
    Physikalisch-Technische Bundesanstalt, D-3300 Braunschweig, Germany
  • Issue
    2
  • fYear
    1987
  • fDate
    6/1/1987 12:00:00 AM
  • Firstpage
    249
  • Lastpage
    251
  • Abstract
    Non-decadic resistance ratios can be determined with high accuracy by means of a novel Josephson potentiometer. The advantage of this potentiometric method has been demonstrated by the first measurements of the resistance ratio 12.9 kΩ. to 10 kΩ of the quantized Hall resistance, step i = 2, of a GaAs-Ga1−xAlxAs-heterostructure and a 10-kΩ cryogenic resistor. The limitation of the described method is given by the noise voltages which are generated by the room-temperature electronic null detector. Considerable improvement is anticipated by replacing the electronic null detector by a highly sensitive superconducting quantum interference device (SQUID) instrument.
  • Keywords
    Arrays; Cryogenics; Current measurement; Electrical resistance measurement; Resistance; Resistors; Voltage measurement;
  • fLanguage
    English
  • Journal_Title
    Instrumentation and Measurement, IEEE Transactions on
  • Publisher
    ieee
  • ISSN
    0018-9456
  • Type

    jour

  • DOI
    10.1109/TIM.1987.6312679
  • Filename
    6312679
    • Link To Document
    https://search.isc.ac/dl/search/defaultta.aspx?DTC=49&DC=1296467