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A structural analysis of Bi/Si(100) 2 x n surfaces by ICISS
被引:1
|作者:
Oishi, N
[1
]
Saitoh, N
Naitoh, M
Nishigaki, S
Shoji, F
Nakanishi, S
Umezawa, K
机构:
[1] Kumamoto Natl Coll Technol, Kumamoto 8611102, Japan
[2] Kyushu Inst Technol, Kitakyushu, Fukuoka 8048550, Japan
[3] Kyushu Kyoritsu Univ, Dept Phys, Kitakyushu, Fukuoka 8078585, Japan
[4] Univ Osaka Prefecture, Sakai, Osaka 5998531, Japan
关键词:
impact-collision ion scattering spectroscopy;
silicon;
bismuth;
surface structure;
D O I:
10.1016/S0169-4332(03)00115-6
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:
We have investigated the structure of Bi-adsorbed Si(I 0 0) 2 x n surfaces with various Bi coverages by low-energy. electron diffraction (LEED) and impact-collision ion scattering spectroscopy (ICISS). Intensities of He+ scattered from Bi and Si atoms were measured as a function of ion incidence angle. Bi-Bi interatomic distances for the toplayer including Bi-dimers were estimated by the shadow-cone technique. Bi-signal peaks appeared even at considerably large angles of incidence, which are attributed to collisions with Bi atoms in sub-surface layers. Bi adsorption is not completed at a mono-layer level, but continues to form multiple layers, fitted in the Si lattice, in the Frank-van der Merwe growth mode. (C) 2003 Published by Elsevier Science B.V.
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页码:373 / 377
页数:5
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