• DocumentCode
    982632
  • Title

    Disorder and the upper critical field of Nb3Ge

  • Author

    Habermeier, H.-U.

  • Author_Institution
    IBM Thomas Watson Research Center, Yorktown Heights, USA
  • Volume
    17
  • Issue
    5
  • fYear
    1981
  • fDate
    9/1/1981 12:00:00 AM
  • Firstpage
    1657
  • Lastpage
    1659
  • Abstract
    The upper critical field, Hc2, as determined from experimental values of Tcand (dHc2/dT)Tc, has been investigated in Nb3Ge superconducting thin films with different degree of structural disorder. An increase of Hc2(O) up to 36.9 T was found for samples with resistivities ranging from 40 μΩcm to 60μΩcm and a decrease of Hc2(O) to 5.7 T for ρ=150 μΩcm. Based on the Ginsburg-Landau solution for Hc2(O) and the change of the coherence length with the electron mean free path a model is presented which describes the change of Hc2(O) with resistivity, qualitatively.
  • Keywords
    Conducting films; Superconducting materials; Conductivity; Electric variables measurement; Germanium; Lattices; Magnetic field measurement; Metastasis; Niobium compounds; Phase change materials; Superconducting films; Temperature;
  • fLanguage
    English
  • Journal_Title
    Magnetics, IEEE Transactions on
  • Publisher
    ieee
  • ISSN
    0018-9464
  • Type

    jour

  • DOI
    10.1109/TMAG.1981.1061329
  • Filename
    1061329
    • Link To Document
    https://search.isc.ac/dl/search/defaultta.aspx?DTC=49&DC=982632