Structural study of the Cu{001}-p(2x2)-Sb surface alloy using low energy electron diffraction

被引：12

作者：

AlShamaileh, E ^{[1
]}

Pussi, K

McEvoy, T

Lindroos, M

Hughes, G

Cafolla, KA

机构：

[1] Dublin City Univ, Sch Phys Sci, Dublin 9, Ireland

[2] Univ Dublin Trinity Coll, Inst Adv Mat, Dublin 2, Ireland

[3] Tampere Univ Technol, Inst Phys, FIN-33101 Tampere, Finland

[4] Dublin City Univ, Sch Chem Sci, Dublin 9, Ireland

[5] Dublin City Univ, NCSR, Dublin 9, Ireland

来源：

SURFACE SCIENCE | 2004年 / 566卷

关键词：

copper; antimony; low energy electron diffraction (LEED); surface structure; morphology; roughness and topography; alloys;

D O I：

10.1016/j.susc.2004.05.021

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：

The deposition of 0.25 ML Sb on clean Cu{100} at room temperature results in a p(2 x 2) low energy electron diffraction (LEED) pattern. The structure of the Cu{100}-p(2 x 2)-Sb phase has been determined using tensor LEED. The results show that despite the large size mismatch between Sb (atomic radius = 1.450 Angstrom) and Cu (atomic radius = 1.278 Angstrom), a surface alloy is formed in which Sb atoms substitute Cu atom in the outermost layer. Sb is found to ripple outward from the surface by 0.56 +/- 0.05 Angstrom. The second and deeper Cu layers are found to be close to their bulk values. (C) 2004 Elsevier B.V. All rights reserved.

引用

页码：52 / 57

页数：6

共 16 条

[1] Morphology and dynamics of 2D Sn-Cu alloys on (100) and (111) Cu surfaces [J].