Vibrational modes of atomic oxygen on W(110)

被引：24

作者：

Elbe, A ^{[1
]}

Meister, G ^{[1
]}

Goldmann, A ^{[1
]}

机构：

[1] UNIV KASSEL,FACHBEREICH PHYS,D-34132 KASSEL,GERMANY

来源：

SURFACE SCIENCE | 1997年 / 371卷 / 2-3期

关键词：

adatoms; electron energy loss spectroscopy; low-index single crystal surfaces; metallic surfaces; vibrations of adsorbed molecules;

D O I：

10.1016/S0039-6028(96)10096-0

中图分类号：

O64 [物理化学（理论化学）、化学物理学];

学科分类号：

070304 ; 081704 ;

摘要：

The initial stages of dissociative oxygen adsorption at room temperature on W(110) have been studied by high-resolution electron energy-loss spectroscopy (HREELS) for coverages up to saturation. We resolve the energies HBARw of the stretching mode and the wagging mode associated with the different oxygen overlayers characterized as 2D-gas (HBARw = 66 meV, 46 meV), (2 x 1) - 0.5 ML (HBARw = 72 meV, 48 meV), (2 x 2) - 0.75 ML (HBARw = 79 meV, 50 meV), and (1 x 1) - 1.0 ML (HBARw = 82 meV, 53 meV), respectively. Our data are consistent with the quasi-threefold hollow position at all coverages.

引用

页码：438 / 444

页数：7

共 17 条

[1] PHOTOEMISSION SPECTRA FROM ADSORBED O ON W(110) AND CO ON W(100) [J].