INITIAL GROWTH OF AU ON NI(110) - SURFACE ALLOYING OF IMMISCIBLE METALS

被引：314

作者：

NIELSEN, LP ^{[1
]}

BESENBACHER, F ^{[1
]}

STENSGAARD, I ^{[1
]}

LAEGSGAARD, E ^{[1
]}

ENGDAHL, C ^{[1
]}

STOLTZE, P ^{[1
]}

JACOBSEN, KW ^{[1
]}

NORSKOV, JK ^{[1
]}

机构：

[1] TECH UNIV DENMARK,DEPT PHYS,DK-2800 LYNGBY,DENMARK

来源：

PHYSICAL REVIEW LETTERS | 1993年 / 71卷 / 05期

关键词：

D O I：

10.1103/PhysRevLett.71.754

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

Atomic resolution scanning tunneling microscopy of Au deposited on Ni(110) shows that even though Au is completely insoluble in bulk Ni, it replaces Ni in the first surface layer forming a surface Au-Ni alloy and the squeezed out Ni atoms agglomerate in Ni islands on the surface. This picture is supported by total energy calculations within the effective-medium theory, which also provide a detailed understanding of this surprising phenomenon.

引用

页码：754 / 757

页数：4

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