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Nonlinear Temperature Dependence of Magnetization of Two-Band Superconductors Near Upper Critical Field |
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| Authors: | IN Askerzade |
| Institution: | Abdus Salam International Center for Theoretical Physics, Faculty of Sciences, Strada Costeria 11, 34014, Trieste, Italy ;Institute of Physics, Azerbaijan National Academy of Sciences, Baku-Az1143, Azerbaijan ;Physics Department, Faculty of Sciences, Ankara University, 06100, Tandogan, Ankara, Turkey |
| Abstract: | Temperature dependence of the magnetization M(T) of two-band superconductors is studied in the vicinity of upper critical field Hc2 by using a two-band Ginzburg-Landau (GL) theory. It is shown that magnetization M(T) has a nonlinear character due to positive curvature of upper critical field Hc2(T) and temperature dependence of effective Ginzburg-Landau parameter κeff(T). The results are shown to be in qualitative agreement with experimental data for the superconducting magnesium diboride, MgB2. |
| Keywords: | two-band superconductivity Ginzburg-Landau theory magnetization |
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