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

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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 fieldH c3 (T). It is shown thatH c3 (T) has the same temperature dependence with Hc2 (T), similar to the case of a single-band superconductor,H c3 (T) = 166H c2 (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 forH c3 (T) gives positive curvature nearT c .

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Authors and Affiliations

  1. Institute of Physics, Azerbaijan National Academy of Sciences, H. Cavid 33, 370143, Baku, Azerbaijan

    I. N. Askerzade

  2. Department of Physics, Faculty of Sciences, Ankara University, Tandoğan, 06100, Ankara, Turkey

    I. N. Askerzade

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Askerzade, I.N. Surface critical magnetic field Hc3(T) of a bulk superconductor MgB2 using two-band Ginzburg-Landau theory. Pramana - J Phys 61, 611–616 (2003). https://doi.org/10.1007/BF02705483

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  • DOI: https://doi.org/10.1007/BF02705483

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