Observation of the dynamical change in a water monolayer adsorbed on a ZnO surface

被引：168

作者：

Dulub, O ^{[1
]}

Meyer, B

Diebold, U

机构：

[1] Tulane Univ, Dept Phys, New Orleans, LA 70118 USA

[2] Ruhr Univ Bochum, Lehrstuhl Theoret Chem, D-44780 Bochum, Germany

来源：

PHYSICAL REVIEW LETTERS | 2005年 / 95卷 / 13期

关键词：

D O I：

10.1103/PhysRevLett.95.136101

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

A combined scanning tunneling microscopy and density-functional theory (DFT) study shows a rich structure of water monolayers adsorbed on ZnO(10 (1) over bar0) at room temperature. Most of the water is in a lowest-energy configuration where every second molecule is dissociated. It coexists with an energetically almost degenerate configuration consisting of a fully molecular water monolayer. Parts of the layer continuously switch back and forth between these two states. DFT calculations reveal that water molecules repeatedly associate and dissociate in this sustained dynamical process.

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页数：4

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