Refined structure of (root 3x root 3) Sb/Si(111)

被引:7
作者
Kim, C
Walko, DA
Robinson, IK
机构
[1] Department of Physics, Univ. of IL at Urbana-Champaign, Urbana, IL 61801
基金
美国能源部;
关键词
adatoms; antimony; low index single crystal surfaces; silicon; surface relaxation and reconstruction; X-ray scattering; diffraction; and reflection;
D O I
10.1016/S0039-6028(97)00407-X
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
Refined structure of (root 3x root 3) surface reconstruction induced by Sb adsorbed on Si(111) was obtained from X-ray diffraction, using a Patterson function and a least-squares lit. A wide range of reciprocal space was probed to get information for the lateral and the vertical displacements of adsorbate and the top layers of Si. The Patterson function confirms the ''milk stool'' trimer model, which, according to a least-squares fit, is centered on the T-4 site. The thermal vibration amplitudes of Sb ad-atoms and those of surface layers of Si were obtained and comparison with the values in other surfaces are made. (C) 1997 Elsevier Science B.V.
引用
收藏
页码:242 / 247
页数:6
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