Identifying the dominant interstitial complex in dilute GaAsN alloys
Significant composition-dependent incorporation of N into non-substitutional sites is often reported for dilute GaAsN alloys. To distinguish (N-N)As, (N-As)As, and (AsGa-NAs) complexes, we compare Rutherford backscattering spectrometry and nuclear reaction analysis (NRA) spectra with Monte Carlo-Mol...
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Veröffentlicht in: | Applied physics letters 2015-11, Vol.107 (22) |
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Format: | Artikel |
Sprache: | eng |
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Zusammenfassung: | Significant composition-dependent incorporation of N into non-substitutional sites is often reported for dilute GaAsN alloys. To distinguish (N-N)As, (N-As)As, and (AsGa-NAs) complexes, we compare Rutherford backscattering spectrometry and nuclear reaction analysis (NRA) spectra with Monte Carlo-Molecular Dynamics simulations along the [100], [110], and [111] directions. For the Monte Carlo simulation, we assume that (N-N)As is aligned along the [111] direction, while (N-As)As is aligned along the [010] direction. The measured channeling NRA spectra exhibit the highest (lowest) yield in the [111] ([100]) directions. Similar trends are observed for simulations of (N-As)As, suggesting that (N-As)As is the dominant interstitial complex in dilute GaAsN. |
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ISSN: | 0003-6951 1077-3118 |
DOI: | 10.1063/1.4935857 |