Surface alloying and anomalous diffusion of Bi on Cu(111)

被引：12

作者：

van Gastel, R. ^{[1
]}

Kaminski, D. ^{[2
,3
]}

Vlieg, E. ^{[2
]}

Poelsema, B. ^{[1
]}

机构：

[1] Univ Twente, MESA Inst Nanotechnol, NL-7500 AE Enschede, Netherlands

[2] Radboud Univ Nijmegen, IMM, NL-6525 AJ Nijmegen, Netherlands

[3] Univ Life Sci Lublin, Fac Food Sci & Biotechnol, PL-20704 Lublin, Poland

来源：

SURFACE SCIENCE | 2009年 / 603卷 / 22期

关键词：

Low-Energy Electron Microscopy (LEEM); Bismuth; Copper; Surface structure; Morphology; Roughness and topography; Epitaxy; ELECTRON-MICROSCOPY; ATOMIC MECHANISMS; CRYSTAL-SURFACES; NUCLEATION; DEPOSITION; SUBSTRATE; CU(100); BISMUTH; GROWTH; LEED;

D O I：

10.1016/j.susc.2009.09.018

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：

We have used Low-Energy Electron Microscopy (LEEM) to study the formation and structure of the surface alloy of Bi on the Cu(111) surface. As a function of Bi coverage we find a progression from a dilute surface alloy to a root 3 x root 3-R30 degrees structure, which coexists with a Bi overlayer when the Bi coverage exceeds 1/3 ML. At a temperature of 401 K, an unusual formation of alloy domains is observed. The origin of this effect is traced down to the mobility of Bi adatoms, which is found to strongly depend on the Bi coverage of the surface alloy on which they reside. (C) 2009 Elsevier B.V. All rights reserved.

引用

页码：3292 / 3296

页数：5

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