Fournier-Lupien, J. -H.
[Author];
Mukherjee, S.
[Author];
Wirths, S.
[Author];
Pippel, E.
[Author];
Hayazawa, N.
[Author];
Mussler, G.
[Author];
Hartmann, J. M.
[Author];
Desjardins, P.
[Author];
Buca, D.
[Author];
Moutanabbir, O.
[Author]
Strain and composition effects on Raman vibrational modes of silicon-germanium-tin ternary alloys
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Media type:
E-Article
Title:
Strain and composition effects on Raman vibrational modes of silicon-germanium-tin ternary alloys
Contributor:
Fournier-Lupien, J. -H.
[Author];
Mukherjee, S.
[Author];
Wirths, S.
[Author];
Pippel, E.
[Author];
Hayazawa, N.
[Author];
Mussler, G.
[Author];
Hartmann, J. M.
[Author];
Desjardins, P.
[Author];
Buca, D.
[Author];
Moutanabbir, O.
[Author]
Published:
American Institute of Physics, 2013
Published in:Applied physics letters 103(26), 263103 (2013). doi:10.1063/1.4855436
Language:
English
DOI:
https://doi.org/10.1063/1.4855436
ISSN:
1077-3118;
0003-6951
Origination:
Footnote:
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Description:
We investigated Raman vibrational modes in silicon-germanium-tin layers grown epitaxially on germanium/silicon virtual substrates using reduced pressure chemical vapor deposition. Severalexcitation wavelengths were utilized to accurately analyze Raman shifts in ternary layers with uniform silicon and tin content in 4–19 and 2–12 at. % ranges, respectively. The excitation using a633 nm laser was found to be optimal leading to a clear detection and an unambiguous identification of all first order modes in the alloy. The influence of both strain and composition on these modes is discussed. The strain in the layers is evaluated from Raman shifts and reciprocal space mapping data and the obtained results are discussed in the light of recent theoretical calculations.