• Non-resonant RF and microwave response: A novel technique for the characterization of superconducting materials

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      https://www.ias.ac.in/article/fulltext/boms/017/07/1271-1285

    • Keywords

       

      Non-resonant microwave absorption; high-temperature superconductors; weak-links; fluxon motion

    • Abstract

       

      When examined using continuous wave electron paramagnetic resonance and nuclear magnetic resonance spectrometers, the highTc superconductors give rise to intense, low field, ‘non-resonant’ absorption signals in the superconducting state. This phenomenon can be used as a highly sensitive, contactless technique for the detection and characterization of superconductivity even in samples containing only minute amounts of the superconducting phase. Further, it can also be applied to the determination of material parameters of interest such asJc andHc2 in addition to being a powerful way of distinguishing between weak-link superconductivity and bulk superconductivity. The details of these aspects are discussed.

    • Author Affiliations

       

      S V Bhat1

      1. Department of Physics, Indian Institute of Science, Bangalore - 560 012, India
    • Dates

       
  • Bulletin of Materials Science | News

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