• DocumentCode
    1023886
  • Title

    All refractory NbN/MgO/NbN tunnel junctions

  • Author

    LeDuc, H.G. ; Stern, J.A. ; Thakoor, S. ; Khanna, S.K.

  • Author_Institution
    California Institute of Technology, Pasadena, CA
  • Volume
    23
  • Issue
    2
  • fYear
    1987
  • fDate
    3/1/1987 12:00:00 AM
  • Firstpage
    863
  • Lastpage
    865
  • Abstract
    We report the fabrication of all-refractory superconductor-insulator-superconductor tunnel junctions of the form NbN/MgO/NbN. The MgO insulating barrier was deposited by e-beam evaporation. High quality junctions were fabricated with sum gaps of 5.2 meV, and a small subgap leakage parameter (Vm=30 mV, measured at 3mV). These devices are for eventual use as quasiparticle mixer elements in millimeter/submiltimeter wave heterodyne receivers. Fabrication techniques and current-voltage characteristics are discussed. We also propose a new growth mode for MgO films on NbN.
  • Keywords
    Superconductor insulator superconductor devices; Current-voltage characteristics; Fabrication; Frequency response; Insulation; Josephson junctions; Lead; Receivers; Superconducting devices; Superconducting films; Tunneling;
  • fLanguage
    English
  • Journal_Title
    Magnetics, IEEE Transactions on
  • Publisher
    ieee
  • ISSN
    0018-9464
  • Type

    jour

  • DOI
    10.1109/TMAG.1987.1064988
  • Filename
    1064988
    • Link To Document
    https://search.isc.ac/dl/search/defaultta.aspx?DTC=49&DC=1023886