کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
5358403 | 1503650 | 2014 | 6 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Evolution of kinetically controlled In-induced surface structure on Si(5Â 5Â 7) surface
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موضوعات مرتبط
مهندسی و علوم پایه
شیمی
شیمی تئوریک و عملی
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چکیده انگلیسی
This paper introduces issue of kinetically controlled and temperature driven superstructural phase transition of Indium (In) on atomically clean high index Si(5 5 7)-7 Ã 1 surface. Auger electron spectroscopy analysis reveals that at room-temperature (RT) with a controlled incident flux of 0.002 ML/s; In overlayers evolve through the Frank-van der Merwe growth mode and yield a (1 Ã 1) diffraction pattern for coverage â¥1 ML. For substrate temperature <500 °C, growth of In follows Stranski-Krastanov growth mode while for temperature >500 °C island growth is observed. On annealing the In/Si(5 5 7) interface in the temperature range 250-340 °C, clusters to two dimensional (2D) layer transformation on top of a stable monolayer is predominated. In-situ RT and HT adsorption and thermal desorption phenomena revealed the formation of coverage and temperature dependent thermally stable In induced superstructural phases such as (4 Ã 1) at 0.5 ML (520 °C), (â3 Ã â3-R30°) at 0.3 ML (560 °C) and (7 Ã 7) at 0.1 ML (580 °C). These indium induced superstructures could be utilized as potential substrate for the growth of various exotic 1D/2D structures.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Applied Surface Science - Volume 314, 30 September 2014, Pages 586-591
Journal: Applied Surface Science - Volume 314, 30 September 2014, Pages 586-591
نویسندگان
Amit Kumar Singh Chauhan, Nirosh M. Eldose, Monu Mishra, Asad Niazi, Lekha Nair, Govind Gupta,