Dynamics and stability of nanostructures on metal surfaces

被引:64
作者
Rosenfeld, G
Morgenstern, K
Esser, M
Comsa, G
机构
[1] Univ Twente, Fac Appl Phys, NL-7500 AE Enschede, Netherlands
[2] Univ Twente, MESA Res Inst, NL-7500 AE Enschede, Netherlands
[3] Univ Lausanne, Inst Condensed Matter Phys, CH-1015 Lausanne, Switzerland
[4] Univ Bonn, Inst Phys & Theoret Chem, D-53115 Bonn, Germany
来源
APPLIED PHYSICS A-MATERIALS SCIENCE & PROCESSING | 1999年 / 69卷 / 05期
关键词
D O I
10.1007/s003390051448
中图分类号
T [工业技术];
学科分类号
08 ;
摘要
Ultrathin metal films consisting of two-dimensional clusters are typically unstable: the cluster ensemble has the tendency to reduce its total free energy via Ostwald ripening or dynamic coalescence of mobile clusters. In this paper we give an overview of recent model experiments addressing these coarsening mechanisms. The experiments have been performed using STM on ensembles consisting of adatom or vacancy clusters with typical diameters in the nanometer range on fcc(lll)-metal surfaces. Agreement with and deviations from conventional theories are discussed.
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页码:489 / 496
页数:8
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