Driving forces for Ag-induced periodic faceting of vicinal Cu(111)

被引：19

作者：

Bachmann, AR

Speller, S

Mugarza, A

Ortega, JE

机构：

[1] Univ Nijmegen, Mat Res Inst, NL-6525 ED Nijmegen, Netherlands

[2] Univ Osnabruck, Fachbereich Phys, D-49069 Osnabruck, Germany

[3] Univ Basque Country, Dept Fis Aplicada 1, E-20018 San Sebastian, Spain

[4] UPV, CSIC, Ctr Mixto, Donostia Int Phys Ctr, San Sebastian 20018, Spain

来源：

SURFACE SCIENCE | 2003年 / 526卷 / 1-2期

关键词：

vicinal single crystal surfaces; faceting; copper; silver; scanning tunneling microscopy; low energy electron diffraction (LEED);

D O I：

10.1016/S0039-6028(02)02574-8

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：

Adsorption of submonolayer amounts of Ag on vicinal Cu(1 1 1) induces periodic faceting. The equilibrium structure is characterized by Ag-covered facets that alternate with clean Cu stripes. In the atomic scale, the driving force is the matching of Ag(1 1 1)-like packed rows with Cu(1 1 1) terraces underneath. This determines the preference for the facet orientation and the evolution of different phases as a function of coverage. Both Cu and Ag stripe widths can be varied smoothly in the 3-30 nm range by tuning Ag coverage, allowing to test theoretical predictions of elastic theories. (C) 2002 Elsevier Science B.V. All rights reserved.

引用

页码：L143 / L150

页数：8

共 27 条

[1] Au adsorption induced faceting and phase transitions of facet planes on the Si[110] zone studied by UHV-REM [J].