Oscillatory relaxation of Al (110) reinvestigated by using medium-energy ion scattering

被引：17
|
作者：
Busch, BW
Gustafsson, T
机构：
[1] Rutgers State Univ, Dept Phys & Astron, Piscataway, NJ 08855 USA
[2] Rutgers State Univ, Surface Modificat Lab, Piscataway, NJ 08855 USA
来源：
SURFACE SCIENCE | 1998年 / 415卷 / 03期
基金：
美国国家科学基金会;
关键词：
aluminum; low-index single-crystal surfaces; medium-energy ion scattering (MEIS); surface relaxation and reconstruction;
D O I：
10.1016/S0039-6028(98)00620-7
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：
Medium-energy ion scattering (MEIS) has been used to investigate the room-temperature structure of clean Al(110). The motivation for this work was the presence of a significant discrepancy between two previous independent low-energy electron diffraction results concerning the sign of the third-to-fourth layer relaxation. We find a damped oscillatory contraction-expansion for the first three interlayer spacings. The relaxation results are (in percent change from the bulk interlayer spacing): Delta d(12) = -8.5+/-1 0%, Delta d(23) = +4.8+/-1.2% and Delta d(34)= -3.9+/-1.4%. These results are compared with other theoretical and experimental values. (C) 1998 Elsevier Science B.V. All rights reserved.
引用
收藏
页码：L1074 / L1078
页数：5
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