Band filling and interband scattering effects in MgB${}_2$: C vs Al doping

Jens Kortus, Oleg V. Dolgov, Reinhard K. Kremer +1

We argue, based on band structure calculations and Eliashberg theory, that the observed decrease of $T_c$ of Al and C doped MgB${}_2$ samples can be understood mainly in terms of a b…