کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
5423888 | 1395805 | 2009 | 5 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
The origin of inter-dimer-row correlated adsorption for NH3 on Si(0Â 0Â 1)
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کلمات کلیدی
موضوعات مرتبط
مهندسی و علوم پایه
شیمی
شیمی تئوریک و عملی
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![عکس صفحه اول مقاله: The origin of inter-dimer-row correlated adsorption for NH3 on Si(0Â 0Â 1) The origin of inter-dimer-row correlated adsorption for NH3 on Si(0Â 0Â 1)](/preview/png/5423888.png)
چکیده انگلیسی
We discuss the interaction between adsorbing ammonia molecules and pre-adsorbed ammonia fragments on the Si(0Â 0Â 1) surface, searching for experimental evidence of a H-bonded precursor state predicted by modelling. While correlations along dimer rows have already been identified, these mix substrate-mediated effects due to dimer buckling with ammonia-adsorbate effects. Correlations between fragments on neighbouring dimer rows are not affected by substrate effects (in this system), allowing an analysis of direct ammonia-adsorbate effects. We present an analysis of cross-row correlations in existing high-coverage STM data which shows significant correlations between NH2 groups on neighbouring dimer rows over a significant range, providing evidence for the H-bonded precursor state with a range of around 10Â Ã
. We discuss implications for the interpretation of STM images of ammonia on Si(0Â 0Â 1).
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Surface Science - Volume 603, Issue 18, 15 September 2009, Pages 2902-2906
Journal: Surface Science - Volume 603, Issue 18, 15 September 2009, Pages 2902-2906
نویسندگان
J.H.G. Owen, D.R. Bowler,