An Evaluation of Al Concentration Dependence of Tc in Two Gap Nature of Mg1-X AlxB2 Superconductor

Author(s): S. Kumar, D. Prasad and L. K. Mishra

In this paper, we have evaluated the Al concentration of Tc using electron phonon coupling constant and coulomb pseudo potential. Our theoretically evaluated results show that as doping concentration x (Al concentration) increases the zero field Tc decreases. This study shows that the σ bands collapsed gradually with Al doping due to the increase in the number of electrons. It was found that in all doping concentration the σ bands were dirtier than the π bands.

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