کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
9594824 | 1507982 | 2005 | 7 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Tuning electronic properties of novel metal oxide nanocrystals using interface interactions: MoO3 monolayers on Au(1Â 1Â 1)
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کلمات کلیدی
موضوعات مرتبط
مهندسی و علوم پایه
شیمی
شیمی تئوریک و عملی
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چکیده انگلیسی
We report experimental and theoretical investigations of monolayer MoO3 nanocrystals grown on Au(1Â 1Â 1), in contrast to the bilayered structure of the bulk oxide crystal. The Au surface acts as the other half of the bilayer by satisfying local bonding requirements through charge redistribution at the interface. Epitaxy with the Au lattice is achieved through the ability of the Mo-O bonds to rotate about one another. The oxide layer becomes semimetallic as it strains to enhance bonding with the Au substrate. This flexibility of the oxide lattice suggests the possibility of tuning electronic properties of transition metal oxides via interface interactions. The effects of electronic structure on the surface chemistry of oxides are in turn illustrated by H adsorption energetics on MoO3.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Surface Science - Volume 577, Issues 2â3, 1 March 2005, Pages L71-L77
Journal: Surface Science - Volume 577, Issues 2â3, 1 March 2005, Pages L71-L77
نویسندگان
Su Ying Quek, Monika M. Biener, Juergen Biener, Cynthia M. Friend, Efthimios Kaxiras,