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Mn enriched surface of annealed (GaMn)As layers annealed under arsenic capping

Adell, M. LU ; Adell, J. LU ; Ilver, L.; Kanski, J.; Sadowski, J. LU and Domagala, J. Z. (2007) In Physical Review B (Condensed Matter and Materials Physics) 75(5).
Abstract

Using synchrotron radiation based spectroscopic methods we have investigated the surface modifications of Ga1-x Mnx As layers due to post growth annealing under amorphous arsenic capping layers. It is established that there is a clear increase of the Mn concentration at the surface after annealing. This is ascribed to a reaction between diffusing Mn interstitials and the As capping. The reacted surface is smooth and well ordered with a 1×2 reconstruction. All data indicate that the annealed (GaMn)As is terminated by a monolayer MnAs in zinc-blende structure.

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author
publishing date
type
Contribution to journal
publication status
published
in
Physical Review B (Condensed Matter and Materials Physics)
volume
75
issue
5
publisher
American Physical Society
external identifiers
  • scopus:33847198252
ISSN
1098-0121
DOI
10.1103/PhysRevB.75.054415
language
English
LU publication?
no
id
479e4b74-99f1-4f99-a589-cc2520966ce9
date added to LUP
2016-05-03 15:37:33
date last changed
2017-02-02 10:25:51
@article{479e4b74-99f1-4f99-a589-cc2520966ce9,
  abstract     = {<p>Using synchrotron radiation based spectroscopic methods we have investigated the surface modifications of Ga1-x Mnx As layers due to post growth annealing under amorphous arsenic capping layers. It is established that there is a clear increase of the Mn concentration at the surface after annealing. This is ascribed to a reaction between diffusing Mn interstitials and the As capping. The reacted surface is smooth and well ordered with a 1×2 reconstruction. All data indicate that the annealed (GaMn)As is terminated by a monolayer MnAs in zinc-blende structure.</p>},
  articleno    = {054415},
  author       = {Adell, M. and Adell, J. and Ilver, L. and Kanski, J. and Sadowski, J. and Domagala, J. Z.},
  issn         = {1098-0121},
  language     = {eng},
  month        = {02},
  number       = {5},
  publisher    = {American Physical Society},
  series       = {Physical Review B (Condensed Matter and Materials Physics)},
  title        = {Mn enriched surface of annealed (GaMn)As layers annealed under arsenic capping},
  url          = {http://dx.doi.org/10.1103/PhysRevB.75.054415},
  volume       = {75},
  year         = {2007},
}