• Influence of pairing symmetry and multiple energy gaps on the behaviour of critical current through the Josephson junction

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    • Keywords


      Iron-based superconductors; pairing symmetry; critical current; IcRn product.

    • Abstract


      The extended Ambegaokar–Baratoff model was applied to calculate the critical current ($I_c$) of a superconductor/insulator/superconductor (S/I/S) Josephson junction with multiple tunnelling channels. We analysed the sensitivity of the critical current, multiplied by normal-state resistance (i.e.,$I_c$$R_n$ product), to the symmetries of the order parameter in the Bardeen-Cooper-Schrieffer (BCS)-type gap formula. In addition, we showed that the temperature dependence of the product $I_c$$R_n$ ($T$),which corresponds to multigap symmetry, exhibitsa shoulder-like feature and has a pronounced kink at $T$ ${\simeq}$10K for the SmFeAsO$_{0.9}$F$_{0.1}$ superconductor.

    • Author Affiliations



      1. Institute of Nuclear Physics, Uzbekistan Academy of Sciences, 100214, Tashkent, Uzbekistan
      2. Akfa University, Milliy Bog Street, Tashkent 111221, Uzbekistan
      3. Faculty of Physics, National University of Uzbekistan, 100174, Tashkent, Uzbekistan
      4. Yeoju Technical Institute in Tashkent, 100121, Tashkent, Uzbekistan
      5. Nukus State Pedagogical Institute named after A’jiniyaz, 230105, Nukus, Uzbekistan
    • Dates

  • Pramana – Journal of Physics | News

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      Posted on July 25, 2019

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