OBSERVATION OF THE LOW-ENERGY EXTERNAL VIBRATIONS OF BENZENE ON RH(111)

被引：23
作者：
WITTE, G
RANGE, H
TOENNIES, JP
WOLL, C
机构：
[1] UNIV HEIDELBERG,INST ANGEW PHYS CHEM,NEUENHEIMER FELD 253,D-69120 HEIDELBERG,GERMANY
[2] MAX PLANCK INST STROMUNGSFORSCH,D-37073 GOTTINGEN,GERMANY
来源：
PHYSICAL REVIEW LETTERS | 1993年 / 71卷 / 07期
关键词：
D O I：
10.1103/PhysRevLett.71.1063
中图分类号：
O4 [物理学];
学科分类号：
0702 ;
摘要：
The low frequency vibrations of benzene molecules adsorbed on Rh(111) have been investigated with inelastic He atom scattering. Well resolved energy losses of 13.1, 12.9, and 12.7 meV were observed for the pure benzene (2 square-root 3 x 3) structure, the CO + C6H6 c(2 square-root 3 x 4)rect and (3 x 3) structures, respectively. As these are the first experimental data for vibrations of a large adsorbed molecule in this energy regime extended Hueckel calculations were used to identify the observed mode as the frustrated translation of the benzene molecule parallel to the surface.
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页码：1063 / 1066
页数：4
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