Theory of the anomalous Rayleigh dispersion at H/W(110) surfaces

被引：41
作者：
Bungaro, C
de Gironcoli, S
Baroni, S
机构：
[1] IST NAZL FIS NUCL, I-34014 TRIESTE, ITALY
[2] SCUOLA INT SUPER STUDI AVANZATI, I-34014 TRIESTE, ITALY
[3] ECOLE NORMALE SUPER LYON, CECAM, F-69007 LYON, FRANCE
来源：
PHYSICAL REVIEW LETTERS | 1996年 / 77卷 / 12期
关键词：
D O I：
10.1103/PhysRevLett.77.2491
中图分类号：
O4 [物理学];
学科分类号：
0702 ;
摘要：
The nature of the anomalies observed in the helium-atom scattering (HAS) and electron energy-loss (EELS) spectra of hydrogenated W(110) surfaces is investigated by calculating the full dispersion of the Rayleigh mode, using density-functional perturbation theory. We find excellent agreement between our calculations and the upper anomalous branch which is observed with both HAS and EELS. The lower branch-which is only detected by HAS-is instead not predicted. A hitherto unrecognized mechanism possibly responsible for the appearance of the second branch is proposed.
引用
收藏
页码：2491 / 2494
页数：4
相关论文
共 25 条
  • [1] PSEUDOPOTENTIALS THAT WORK - FROM H TO PU
    BACHELET, GB
    HAMANN, DR
    SCHLUTER, M
    [J]. PHYSICAL REVIEW B, 1982, 26 (08): : 4199 - 4228
  • [2] HYDROGEN COVERED W(110) SURFACE - A HYDROGEN LIQUID WITH A PROPENSITY FOR ONE-DIMENSIONAL ORDER
    BALDEN, M
    LEHWALD, S
    IBACH, H
    MILLS, DL
    [J]. PHYSICAL REVIEW LETTERS, 1994, 73 (06) : 854 - 857
  • [3] Substrate and hydrogen phonons of the ordered p(2x1) and (2x2) phase and of the anomalous (1x1) phase of hydrogen on W(110)
    Balden, M
    Lehwald, S
    Ibach, H
    [J]. PHYSICAL REVIEW B, 1996, 53 (11) : 7479 - 7491
  • [4] SURFACE PHONONS OF THE CLEAN AND H-COVERED W(110) SURFACE MEASURED WITH EELS
    BALDEN, M
    LEHWALD, S
    PREUSS, E
    IBACH, H
    [J]. SURFACE SCIENCE, 1994, 307 : 1141 - 1147
  • [5] GREEN-FUNCTION APPROACH TO LINEAR RESPONSE IN SOLIDS
    BARONI, S
    GIANNOZZI, P
    TESTA, A
    [J]. PHYSICAL REVIEW LETTERS, 1987, 58 (18) : 1861 - 1864
  • [6] BUNGARO C, 1995, THESIS SCUOLA INT SU
  • [7] RECONSTRUCTION OF THE W(110) SURFACE INDUCED BY HYDROGEN ADSORPTION
    CHUNG, JW
    YING, SC
    ESTRUP, PJ
    [J]. PHYSICAL REVIEW LETTERS, 1986, 56 (07) : 749 - 752
  • [8] LATTICE-DYNAMICS OF METALS FROM DENSITY-FUNCTIONAL PERTURBATION-THEORY
    DE GIRONCOLI, S
    [J]. PHYSICAL REVIEW B, 1995, 51 (10): : 6773 - 6776
  • [9] DIFFUSION OF HYDROGEN AND DEUTERIUM ON THE (111)PLANE OF TUNGSTEN
    DHARMADHIKARI, C
    GOMER, R
    [J]. SURFACE SCIENCE, 1984, 143 (01) : 223 - 242
  • [10] DIFAGGIO R, 1982, PHYS REV B, V25, P3490
123