Step-Orientation-Dependent Oxidation: From 1D to 2D Oxides

被引：48

作者：

Klikovits, J. ^{[1
]}

Schmid, M. ^{[1
]}

Merte, L. R. ^{[1
]}

Varga, P. ^{[1
]}

Westerstrom, R. ^{[2
]}

Resta, A. ^{[2
]}

Andersen, J. N. ^{[2
]}

Gustafson, J. ^{[2
]}

Mikkelsen, A. ^{[2
]}

Lundgren, E. ^{[2
]}

Mittendorfer, F. ^{[3
]}

Kresse, G. ^{[3
]}

机构：

[1] Vienna Univ Technol, Inst Allgemeine Phys, A-1040 Vienna, Austria

[2] Lund Univ, Inst Phys, Dept Synchrotron Radiat Res, S-22100 Lund, Sweden

[3] Univ Vienna, Fak Phys, A-1090 Vienna, Austria

来源：

PHYSICAL REVIEW LETTERS | 2008年 / 101卷 / 26期

基金：

瑞典研究理事会;

关键词：

D O I：

10.1103/PhysRevLett.101.266104

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

Using scanning tunneling microscopy and density functional theory, we have studied the initial oxidation of Rh(111) surfaces with two types of straight steps, having {100} and {111} microfacets. The one-dimensional (1D) oxide initially formed at the steps acts as a barrier impeding formation of the 2D oxide on the (111) terrace behind it. We demonstrate that the details of the structure of the 1D oxide govern the rate of 2D oxidation and discuss implications for oxidation of nanoparticles.

引用

页数：4

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