کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
5423261 | 1507953 | 2010 | 5 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Re-investigation of the Bi-induced Si(111)-(3Ã3) surfaces by low-energy electron diffraction
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کلمات کلیدی
موضوعات مرتبط
مهندسی و علوم پایه
شیمی
شیمی تئوریک و عملی
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چکیده انگلیسی
The atomic structures of the Bi/Si(111)-(3Ã3) reconstructed surfaces obtained at different adsorbate coverages were studied by dynamical low-energy electron diffraction (LEED) I-V analysis. The experimentally obtained I-V curves of the β-Bi/Si(111)-(3Ã3) surface, which is formed by a Bi coverage of 1 ML, showed good agreement with the curves calculated for the milk stool model, a model proposed in the literature. In contrast to this result, the I-V curves of the α-phase obtained at a coverage of 1/3 ML do not agree with those reported in early LEED studies. We found that the I-V curves reported in the former LEED studies resemble closely to the results obtained for the surface on which the β and α-phases coexist. Based on the obtained I-V curves, we propose a more reliable structural model for the α-phase, and present the way to determine the presence of a high quality α-phase by using LEED.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Surface Science - Volume 604, Issues 11â12, 15 June 2010, Pages 1044-1048
Journal: Surface Science - Volume 604, Issues 11â12, 15 June 2010, Pages 1044-1048
نویسندگان
Takuya Kuzumaki, Tetsuroh Shirasawa, Seigi Mizuno, Nobuo Ueno, Hiroshi Tochihara, Kazuyuki Sakamoto,