Vibrational modes of hydrogen and deuterium at InP(110) surfaces

被引：13

作者：

Nienhaus, H

Grabowski, SP

Monch, W

机构：

[1] Lab. für Festkörperphysik, Gerhard-Mercator-Univ. Duisburg

来源：

SURFACE SCIENCE | 1996年 / 368卷

关键词：

chemisorption; electron energy loss spectroscopy; etching; hydrogen; indium phosphide; low index single crystal surfaces; vibrations of adsorbed molecules;

D O I：

10.1016/S0039-6028(96)01050-3

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：

Vibrations at hydrogen- and deuterium-covered InP(110) surfaces were investigated by high-resolution electron energy-loss spectroscopy. With semi-insulating crystals, In-H and P-D bending modes were found at 438 and 465 cm(-1) (54.3 and 57.7 meV), respectively. In the low-coverage regime two components of the P-H stretching vibration at 2260 and 2300 cm(-1) (280.2 and 285.4 meV) are resolved. They are explained by vibrational motions of mono- and dihydride groups. This indicates that InP(110) surfaces are disrupted even after small H exposures. Bond strengths are estimated from the isotope shifts of the stretching frequencies.

引用

页码：196 / 201

页数：6

共 25 条

[1] VIBRATIONAL SPECTRUM OF DIMETHYLPHOSPHINE [J].