RING CLUSTERS IN TRANSITION-METAL SILICON SURFACE-STRUCTURES

被引：75

作者：

BENNETT, PA ^{[1
]}

COPEL, M

CAHILL, DG

FALTA, J

TROMP, RM

机构：

[1] ARIZONA STATE UNIV, DEPT PHYS, TEMPE, AZ 85287 USA

[2] IBM RES DIV, TJ WATSON RES CTR, YORKTOWN HTS, NY 10598 USA

来源：

PHYSICAL REVIEW LETTERS | 1992年 / 69卷 / 08期

关键词：

D O I：

10.1103/PhysRevLett.69.1224

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

We have determined the atomic structure of the Si(111)-(square-toot 7 x square-root 7)Co surface using scanning tunneling microscopy and ion scattering. The unit cell contains one surface substitutional cobalt atom centered under a 6 silicon adatom cluster. High-temperature annealing produces a low density lattice gas of these ringlike clusters, giving rise to an "impurity stablized 1 x 1" structure. They occur for several other transition metals, suggesting a stable, universal, silicide related structure.

引用

页码：1224 / 1227

页数：4

共 20 条

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