SURFACE VIBRATIONS OF AD-CLUSTERS ON METAL-SURFACES - AG-N/PT(111)

被引：0

作者：

BLANDIN, P

MASSOBRIO, C

BALLONE, P

机构：

[1] FORSCHUNGSZENTRUM JULICH, FORSCHUNGSZENTRUM, INST FESTKORPERFORSCH, D-52425 JULICH, GERMANY

[2] ECOLE POLYTECH FED LAUSANNE, PHB ECUBLENS, INST PHYS EXPTL, CH-1015 LAUSANNE, SWITZERLAND

来源：

SURFACE SCIENCE | 1995年 / 331卷

关键词：

ATOMISTIC DYNAMICS; CLUSTERS; COMPUTER SIMULATION; PLATINUM; SILVER; VIBRATIONS OF ADSORBED MOLECULES;

D O I：

10.1016/0039-6028(95)00333-9

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 compute the vibrational eigenvalues and eigenvectors for the system composed of a Pt slab limited by two parallel (111) surfaces and Ag ad-clusters of different sizes (up to Ag-19) and geometries. The potential energy of the system is described by the embedded atom model. We discuss the specific features of the density of states associated with different cluster morphologies and we point out the similarities and differences with the vibrational properties of alloyed surfaces with equal Ag content. We analyze in detail the phonons' displacement patterns and polarizations.

引用

页码：771 / 775

页数：5