Mn solid solutions in self-assembled Ge/Si (001) quantum dot heterostructures

  title={Mn solid solutions in self-assembled Ge/Si (001) quantum dot heterostructures},
  author={Joseph Kassim and Christopher A. Nolph and Matthieu Jamet and Petra Reinke and Jerrold Anthony Floro},
  journal={Applied Physics Letters},
Heteroepitaxial Ge0.98Mn0.02 quantum dots (QDs) on Si (001) were grown by molecular beam epitaxy. The standard Ge wetting layer-hut-dome-superdome sequence was observed, with no indicators of second phase formation in the surface morphology. We show that Mn forms a dilute solid solution in the Ge quantum dot layer, and a significant fraction of the Mn partitions into a sparse array of buried, Mn-enriched silicide precipitates directly underneath a fraction of the Ge superdomes. The magnetic… 

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