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- W2079386325 abstract "We use first-principles calculations and experimental data to demonstrate that impurity segregation at heterointerfaces is governed by several factors. In particular, Hf impurities avoid the ${text{Si-SiO}}_{2}$ interface when present in the ${text{SiO}}_{2}$ side, might segregate if present in the Si side, but do not cross into ${text{SiO}}_{2}$. Substitutional Hf impurities in ${text{SiO}}_{2}$, as revealed by a through-focal series of $Z$-contrast images, act as markers for Si sites, suggesting ordering in the first two Si planes of the amorphous ${text{SiO}}_{2}$. Finally, we show that dopants in Si segregate at the interface by adopting several distinct configurations and also do not cross into ${text{SiO}}_{2}$." @default.
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- W2079386325 date "2008-05-15" @default.
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- W2079386325 title "Impurity segregation and ordering in<mml:math xmlns:mml=http://www.w3.org/1998/Math/MathML display=inline><mml:mrow><mml:mtext>Si</mml:mtext><mml:mo>/</mml:mo><mml:msub><mml:mrow><mml:mtext>SiO</mml:mtext></mml:mrow><mml:mn>2</mml:mn></mml:msub><mml:mo>/</mml:mo><mml:msub><mml:mrow><mml:mtext>HfO</mml:mtext></mml:mrow><mml:mn>2</mml:mn></mml:msub></mml:mrow></mml:math>structures" @default.
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- W2079386325 doi "https://doi.org/10.1103/physrevb.77.195317" @default.
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