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
收藏
页码：771 / 775
页数：5
相关论文
共 14 条
  • [1] 2-DIMENSIONAL MICROSTRUCTURES OF SUBMONOLAYER-AG ON PT(111) INDUCED BY ELASTIC STRAIN
    BECKER, AF
    ROSENFELD, G
    POELSEMA, B
    COMSA, G
    [J]. PHYSICAL REVIEW LETTERS, 1993, 70 (04) : 477 - 480
  • [2] EVIDENCE FOR STRAIN-INDUCED 2D ROUGHENING IN AG ISLANDS ON PT(111)
    BLANDIN, P
    MASSOBRIO, C
    BALLONE, P
    [J]. PHYSICAL REVIEW LETTERS, 1994, 72 (19) : 3072 - 3075
  • [3] NUCLEATION AND GROWTH OF METALLIC SUBMONOLAYERS ON COMPACT METAL-SURFACES
    BLANDIN, P
    MASSOBRIO, C
    BALLONE, P
    [J]. PHYSICAL REVIEW B, 1994, 49 (23) : 16637 - 16648
  • [4] EMBEDDED-ATOM METHOD - DERIVATION AND APPLICATION TO IMPURITIES, SURFACES, AND OTHER DEFECTS IN METALS
    DAW, MS
    BASKES, MI
    [J]. PHYSICAL REVIEW B, 1984, 29 (12): : 6443 - 6453
  • [5] FOILES SM, 1986, PHYS REV B, V33, P7983, DOI 10.1103/PhysRevB.33.7983
  • [6] KLEIN AW, 1993, SURF SCI, V287
  • [7] KLEIN AW, 1993, APPL SURF SCI, V70
  • [8] KLEIN AW, 1992, 12TH P INT VAC C HAG
  • [9] LAGALLY M, 1990, KINETICS ORDERING GR
  • [10] CU(111) AND AG(111) SURFACE-PHONON SPECTRUM - THE IMPORTANCE OF AVOIDED CROSSINGS
    NELSON, JS
    DAW, MS
    SOWA, EC
    [J]. PHYSICAL REVIEW B, 1989, 40 (03): : 1465 - 1480
12