• Surface critical magnetic field Hc3(T) of a bulk superconductor MgB2 using two-band Ginzburg-Landau theory

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      https://www.ias.ac.in/article/fulltext/pram/061/03/0611-0616

    • Keywords

       

      Magnesium diboride; two-band superconductivity; Ginzburg-Landau theory; surface superconductivity

    • Abstract

       

      Two-band Ginzburg-Landau (TB G–L) equations for a bulk MgB2 were solved analytically to determine the temperature dependence of surface critical magnetic fieldHc3 (T). It is shown thatHc3 (T) has the same temperature dependence with Hc2 (T), similar to the case of a single-band superconductor,Hc3 (T) = 166Hc2 (T). We use an elimination procedure for the decoupling of G–L equations of two-band superconductivity, which eases the calculations. It is expected that the temperature dependence forHc3 (T) gives positive curvature nearTc.

    • Author Affiliations

       

      I N Askerzade1 2

      1. Institute of Physics, Azerbaijan National Academy of Sciences, H. Cavid 33, Baku - 370143, Azerbaijan
      2. Department of Physics, Faculty of Sciences, Ankara University, Tandoğan, Ankara - 06100, Turkey
    • Dates

       
  • Pramana – Journal of Physics | News

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