Aggregation mechanisms in the adsorption of metals on Si(111)7x7 -: art. no. 235412

被引：18
|
作者：
Vasco, E
Polop, C
Rodríguez-Cañas, E
机构：
[1] CSIC, Inst Ciencia Mat, E-28049 Madrid, Spain
[2] Rhein Westfal TH Aachen, Inst Phys 1, D-52056 Aachen, Germany
来源：
PHYSICAL REVIEW B | 2003年 / 67卷 / 23期
关键词：
D O I：
10.1103/PhysRevB.67.235412
中图分类号：
T [工业技术];
学科分类号：
08 ;
摘要：
Several mechanisms have been revised to explain the aggregation of metal adsorbates on a 7x7 reconstructed Si(111) surface. Some of them are based on the high mobility of incident particles, while others collect the nonlocal weak or moderate interactions among adsorbates. The adsorbate aggregation, which has been characterized via the temporal evolution of the surface occupation and monomer to cluster density ratios, has been studied for each mechanism through kinetic Monte Carlo simulations as well as by approaches to the corresponding rate equations. The cooperative diffusion is revealed as the unique mechanism that is able to fit fairly the existing data related to the adsorption of metals on the Si(111)7x7 surface.
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页数：10
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