Coexistence of atomic and molecular chemisorption states:: H2/Pd(210) -: art. no. 096103

被引：66

作者：

Schmidt, PK ^{[1
]}

Christmann, K

Kresse, G

Hafner, J

Lischka, M

Gross, A

机构：

[1] Free Univ Berlin, Inst Chem, D-14195 Berlin, Germany

[2] Univ Vienna, Inst Mat Phys, A-1090 Vienna, Austria

[3] Tech Univ Munich, Phys Dept T30, D-85747 Garching, Germany

来源：

PHYSICAL REVIEW LETTERS | 2001年 / 87卷 / 09期

关键词：

D O I：

10.1103/PhysRevLett.87.096103

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

A novel H-2 molecular adsorption state on metal surfaces has been detected by temperature-programmed desorption and electron energy loss spectroscopy experiments of the H-2/Pd(210) system. The molecular nature of this state has been verified by isotope exchange experiments. This molecular state leads to a decrease of the surface work function while atomic hydrogen on Pd(210) causes an increase. Ab initio total-energy calculations have confirmed all experimental findings. Through these calculations the microscopic nature of this novel molecular adsorption state could be identified; it turns out that this state is stabilized by the presence of atomic hydrogen on the Pd(210) surface.

引用

页码：961031 / 961034

页数：4

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