Theoretical and experimental optical spectroscopy study of hydrogen adsorption at Si(111)-(7x7)

被引:66
作者
Noguez, C
Beitia, C
Preyss, W
Shkrebtii, AI
Roy, M
Borensztein, Y
DelSole, R
机构
[1] OHIO UNIV,DEPT PHYS & ASTRON,ATHENS,OH 45701
[2] OHIO UNIV,CONDENSED MATTER & SURFACE SCI PROGRAM,ATHENS,OH 45701
[3] UNIV PARIS 06,LAB OPT SOLIDE,UA CNRS 781,F-75252 PARIS 05,FRANCE
[4] UNIV ROMA TOR VERGATA,DIPARTIMENTO FIS,INST NAZL FIS MAT,I-00133 ROME,ITALY
关键词
D O I
10.1103/PhysRevLett.76.4923
中图分类号
O4 [物理学];
学科分类号
0702 ;
摘要
The combination of in situ real-time surface differential reflectivity (SDR) spectroscopy and microscopic calculations has been used for the first time to investigate gas adsorption on a Si surface. The optical signatures of some microscopic structural units of Si(111)-(7 x 7) have been identified. The development of the corresponding features in the SDR spectra upon the amount of H exposure allowed us to demonstrate the occurrence of two different mechanisms in the hydrogenation and to determine their relative kinetics.
引用
收藏
页码:4923 / 4926
页数:4
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