The essential role of carefully optimized synthesis for elucidating intrinsic material properties of (Ga,Mn)As

The electronic band structure of (Ga,Mn)As has been debated due to contrasting reports of experimental findings from samples differently synthesized. Nĕmec et al. show that a careful optimization of the synthesis protocol is necessary to evaluate the intrinsic semiconducting and magnetic properties of (Ga,Mn)As.