Structural properties of Mn0.05Ge0.95 quantum dots grown on a p-type Si substrate. (a) A high-resolution TEM cross-section image of typical Mn0.05Ge0.95 quantum dot showing the detailed lattice structure. (b) Typical EDS spectrum showing that both Mn and Ge are present in the Mn0.05Ge0.95 quantum dot. The average Mn concentration in the quantum dots was estimated to be 4.8 ± 0.5%.
