کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
5424194 | 1507958 | 2009 | 8 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
The geometries of coadsorbate layers of O and H on Ru(0Â 0Â 1): How well can quantitative LEED see hydrogen atoms?
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کلمات کلیدی
موضوعات مرتبط
مهندسی و علوم پایه
شیمی
شیمی تئوریک و عملی
پیش نمایش صفحه اول مقاله
![عکس صفحه اول مقاله: The geometries of coadsorbate layers of O and H on Ru(0Â 0Â 1): How well can quantitative LEED see hydrogen atoms? The geometries of coadsorbate layers of O and H on Ru(0Â 0Â 1): How well can quantitative LEED see hydrogen atoms?](/preview/png/5424194.png)
چکیده انگلیسی
Using a CCD LEED system for the collection of IV data with low beam damage, and full dynamical as well as tensor LEED calculations, we have determined the geometries of the (2Â ÃÂ 2)-(OÂ +Â 3H) and the (2Â ÃÂ 2)-(OÂ +Â H) coadsorbate structures on Ru(0Â 0Â 1). We show that here quantitative LEED can locate the H atoms very well. Not only their sites (hcp in the first, fcc in the second case), but also the Ru-H spacings and changes in the first two substrate layers are clearly determined. We argue that this success is due to the relatively large data range and to the smaller H mobility compared to pure H layers caused by their repulsive lateral interactions with the oxygen atoms.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Surface Science - Volume 603, Issues 10â12, 1 June 2009, Pages 1397-1404
Journal: Surface Science - Volume 603, Issues 10â12, 1 June 2009, Pages 1397-1404
نویسندگان
Marianne Gsell, Dietrich Menzel,