Comment on “Band Filling and Interband Scattering Effects in ${\mathrm{MgB}}_2$: Carbon versus Aluminium Doping”

A Comment on the Letter by Jens Kortus et al., Phys. Rev. Lett. 94, 027002 (2005). The authors of the Letter offer a Reply.

Figure 1

Superconducting energy gaps from different experiments and calculation of Kortus et al. [1] on the carbon doped ${\mathrm{MgB}}_2$ as a function of $T_c$.