Order-disorder phase transition of the Cu(001) surface under equilibrium oxygen pressure

被引：32

作者：

Iddir, H. ^{[1
]}

Fong, D. D. ^{[1
,2
]}

Zapol, P. ^{[1
]}

Fuoss, P. H. ^{[1
,2
]}

Curtiss, L. A. ^{[1
]}

Zhou, G. -W. ^{[1
]}

Eastman, J. A. ^{[1
]}

机构：

[1] Argonne Natl Lab, Div Mat Sci, Argonne, IL 60439 USA

[2] Argonne Natl Lab, Chem Sci & Engn Div, Argonne, IL 60439 USA

来源：

PHYSICAL REVIEW B | 2007年 / 76卷 / 24期

关键词：

D O I：

10.1103/PhysRevB.76.241404

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

In situ surface x-ray scattering is used to determine the stable oxygen-induced surface structure on Cu(001) at high temperatures and under equilibrium oxygen pressure. The structure is composed of a c(2x2)-O adlayer atop a randomly 3/4-filled Cu layer for temperatures between 473 and 1000 K. Below 473 K, the vacancies in the topmost Cu layer order to form a (2 root 2x root 2)R45 degrees missing row structure. This order-disorder transition is confirmed by first-principles calculations.

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页数：4

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