کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
5358194 | 1388229 | 2010 | 5 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Order-disorder transition for corrugated Au layers
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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: Order-disorder transition for corrugated Au layers Order-disorder transition for corrugated Au layers](/preview/png/5358194.png)
چکیده انگلیسی
Atomic-scale structure of the growth of a gold film on (1Â 1Â 2) plane of Mo single crystal was investigated by means of low energy electron diffraction (LEED) and scanning tunneling microscopy (STM) up to two monolayers (ML) of gold coverage. Both LEED and STM results establish that Au grows on Mo(1Â 1Â 2) in a layer-by-layer mode, for at least the first two monolayers. A number of ordered structures are formed and both the first and second layers adopt the Mo(1Â 1Â 2) 1Â ÃÂ 1 surface structure upon completion. For some gold layers on Mo(1Â 1Â 2), notably the 1.66 monolayer 3Â ÃÂ 1 and 1.75 monolayer 4Â ÃÂ 1 gold overlayers, we find evidence of a phase transition associated with increasing disorder in gold layers with structural corrugation and anisotropic band structure. The signature of this phase transition, at temperatures in the range of 400-500Â K, is a sharp decrease in the overlayer effective Debye temperature.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Applied Surface Science - Volume 256, Issue 15, 15 May 2010, Pages 4796-4800
Journal: Applied Surface Science - Volume 256, Issue 15, 15 May 2010, Pages 4796-4800
نویسندگان
Keisuke Fukutani, N. Lozova, S.M. Zuber, P.A. Dowben, P. Galiy, Yaroslav B. Losovyj,