Influence of interband interaction on Isotope Effect Exponent of MgB2 Superconductors
Udomsamuthirun, P. · Kumvongsa, C. · Burakorn, A. · Changkanarth, P.
Original · EN
The exact formula of Tc's equation and the isotope effect exponent of two-band s-wave superconductors in weak-coupling limit are derived by considering the influence of interband interaction. The paring interaction in each band consisted of 2 parts: the electron-phonon interaction and non-phonon interaction are included in our model. The isotope effect exponent of MgB2 equal to 0.3 with Tc 40 K can be found in the weak coupling regime and interband interaction of electron-phonon interaction show more effect on isotope effect exponent than of non-phonon interaction.
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