Solid phase epitaxy of ferromagnetic MnAs dots on GaMnAs layers

J. Sadowski; M. Adell; J. Kanski; L. Ilver; E. Janik; E. Lusakowska; J. Z. Domagala; R. Brucas; M. Hanson

Solid phase epitaxy of ferromagnetic MnAs dots on GaMnAs layers

Materials Science 2007-05-23 v2

Authors: J. Sadowski , M. Adell , J. Kanski , L. Ilver , E. Janik , E. Lusakowska , J. Z. Domagala , R. Brucas , M. Hanson

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Abstract

Formation of MnAs quantum dots in a regular ring-like distribution has been found on MBE-grown (GaMn)As surfaces after low-temperature annealing under As capping. The Mn was supplied by out-diffusing Mn interstitials from (GaMn)As. With 5 at% substitutional Mn the quantum dots appeared for (GaMn)As layers thicker than 500 A. For thinner layers the Mn-rich surfaces, presumably monolayer thick MnAs, are smooth and well-ordered (1x2), and are well suited for continued epitaxial growth.

Keywords

semiconductor nanowire growth

Cite

@article{arxiv.cond-mat/0504074,
  title  = {Solid phase epitaxy of ferromagnetic MnAs dots on GaMnAs layers},
  author = {J. Sadowski and M. Adell and J. Kanski and L. Ilver and E. Janik and E. Lusakowska and J. Z. Domagala and R. Brucas and M. Hanson},
  journal= {arXiv preprint arXiv:cond-mat/0504074},
  year   = {2007}
}

Comments

12 pages, 4 figures

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