Diffusion of Mn interstitials in (Ga,Mn)As epitaxial layers
Result description
The magnetic properties of thin (Ga,Mn) As layers improve during annealing by out-diffusion of interstitialMn ions to a free surface. Out-diffused Mn atoms participate in the growth of aMn-rich surface layer and a saturation of this layer causes an inhibition of the out-diffusion. We combine high-resolution x-ray diffraction with x-ray absorption spectroscopy and a numerical solution of the diffusion problem for the study of the out-diffusion of Mn interstitials during a sequence of annealing steps. Ourdata demonstrate that the out-diffusion of the interstitials is substantially affected by the internal electric field caused by an inhomogeneous distribution of charges in the (Ga,Mn) As layer.
Keywords
The result's identifiers
Result code in IS VaVaI
Alternative codes found
RIV/68378271:_____/11:00375052 RIV/68407700:21230/11:00221366
Result on the web
DOI - Digital Object Identifier
Alternative languages
Result language
angličtina
Original language name
Diffusion of Mn interstitials in (Ga,Mn)As epitaxial layers
Original language description
The magnetic properties of thin (Ga,Mn) As layers improve during annealing by out-diffusion of interstitialMn ions to a free surface. Out-diffused Mn atoms participate in the growth of aMn-rich surface layer and a saturation of this layer causes an inhibition of the out-diffusion. We combine high-resolution x-ray diffraction with x-ray absorption spectroscopy and a numerical solution of the diffusion problem for the study of the out-diffusion of Mn interstitials during a sequence of annealing steps. Ourdata demonstrate that the out-diffusion of the interstitials is substantially affected by the internal electric field caused by an inhomogeneous distribution of charges in the (Ga,Mn) As layer.
Czech name
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Czech description
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Classification
Type
Jx - Unclassified - Peer-reviewed scientific article (Jimp, Jsc and Jost)
CEP classification
BM - Solid-state physics and magnetism
OECD FORD branch
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Result continuities
Project
Result was created during the realization of more than one project. More information in the Projects tab.
Continuities
Z - Vyzkumny zamer (s odkazem do CEZ)
Others
Publication year
2011
Confidentiality
S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů
Data specific for result type
Name of the periodical
Physical Review B - Condensed Matter and Materials Physics
ISSN
1098-0121
e-ISSN
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Volume of the periodical
83
Issue of the periodical within the volume
24
Country of publishing house
US - UNITED STATES
Number of pages
7
Pages from-to
1-7
UT code for WoS article
000292183300005
EID of the result in the Scopus database
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Basic information
Result type
Jx - Unclassified - Peer-reviewed scientific article (Jimp, Jsc and Jost)
CEP
BM - Solid-state physics and magnetism
Year of implementation
2011