• DocumentCode
    979312
  • Title

    On the temperature and frequency dependence of the surface resistance of superconducting Nb

  • Author

    Philipp, A. ; Halbritter, J.

  • Author_Institution
    Kernforschungszentrum Karlsruhe, IK, Fed. Rep. of Germany
  • Volume
    17
  • Issue
    1
  • fYear
    1981
  • fDate
    1/1/1981 12:00:00 AM
  • Firstpage
    951
  • Lastpage
    954
  • Abstract
    Surface resistances R(T,f)of superconducting Nb show Δ-values well below the bulk value and a frequency dependence deviating from homogeneous Nb. So, surface resistances in various modes between 12 and 18 GHz have been measured for the first time. As results, Δ/kTcis increasing from 1.83 to 1.87 with frequency, and R_{sc}(4.2 K) \\propto f^{1.63 \\pm 0.02} has been fitted to the data. This with f improving agreement with what is anticipated from the BCS theory of homogeneous Nb can either be explained by rf induced superconductivity or by h.f being larger than the smearing of the density of states by weak superconducting spots.
  • Keywords
    Superconducting materials; Surfaces; Chemicals; Electrical resistance measurement; Frequency dependence; Frequency measurement; Loss measurement; Niobium; Superconductivity; Surface resistance; Surface treatment; Temperature dependence;
  • fLanguage
    English
  • Journal_Title
    Magnetics, IEEE Transactions on
  • Publisher
    ieee
  • ISSN
    0018-9464
  • Type

    jour

  • DOI
    10.1109/TMAG.1981.1061031
  • Filename
    1061031
    • Link To Document
    https://search.isc.ac/dl/search/defaultta.aspx?DTC=49&DC=979312