Electron reflectivity measurements of Ag adatom concentrations on W(110)

被引：25

作者：

de la Figuera, J. ^{[1
]}

Bartelt, N. C.

McCarty, K. F.

机构：

[1] Univ Autonoma Madrid, Dpto Fis Mat Condensada, E-28049 Madrid, Spain

[2] Univ Autonoma Madrid, Ctr Microanal Mat, E-28049 Madrid, Spain

来源：

SURFACE SCIENCE | 2006年 / 600卷 / 18期

关键词：

leem; low-energy electron microscopy; electron reflectivity; phase transitions; thin films; Ag; W; sublimation;

D O I：

10.1016/j.susc.2006.02.069

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 density of two-dimensional Ag adatom gases on W(110) is determined by monitoring local electron reflectivity using low-energy electron microscopy (LEEM). This method of adatom concentration measurement can detect changes in adatom density at least as small as 10(-3) ML for a mu m size region of the surface. Using this technique at high temperatures we measure the sublimation rates of Ag adatoms on W(110). At lower temperatures, where Ag adatoms condense into monolayer islands, we determine the temperature dependence of the density of adatoms coexisting with this condensed phase and compare it with previous estimates. (c) 2006 Elsevier B.V. All rights reserved.

引用

页码：4062 / 4066

页数：5

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