Oxygen induced reconstruction of the Rh(100) surface:: General tendency towards threefold oxygen adsorption site on Rh surfaces

被引:50
作者
Baraldi, A
Cerdá, J
Martín-Gago, JA
Comelli, G
Lizzit, S
Paolucci, G
Rosei, R
机构
[1] Sincrotrone Trieste SCpA, I-34012 Trieste, Italy
[2] CSIC, Inst Ciencia Mat Madrid, E-28049 Madrid, Spain
[3] Univ Trieste, Dipartmento Fis, I-34127 Trieste, Italy
[4] INFM, Lab TASC, I-34012 Trieste, Italy
关键词
D O I
10.1103/PhysRevLett.82.4874
中图分类号
O4 [物理学];
学科分类号
0702 ;
摘要
On the basis of a low energy electron diffraction I-V structural investigation, the surface geometry of the Rh(100) + (2 x 2)-2O phase has been determined. The oxygen is found to adsorb in an unusual threefold site of the rhombi created by the reconstruction of the first rhodium layer, producing a pg symmetry, in agreement with theoretical predictions but at variance with previous experimental conclusions. Our result indicates that there is a strong tendency of oxygen to adsorb in threefold sites on all Rh surfaces. [S0031-9007(99)09340-0].
引用
收藏
页码:4874 / 4877
页数:4
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