Substitutional adsorption geometry for Pb(111)-(√3x√3)R30°-K

被引:6
|
作者
Pan, FM
Caragiu, M
Ferralis, N
Diehl, RD [1 ]
机构
[1] Penn State Univ, Dept Phys, University Pk, PA 16802 USA
[2] Penn State Univ, Inst Mat Res, Davey Lab 104, University Pk, PA 16802 USA
[3] Ohio No Univ, Dept Phys, Ada, OH 45810 USA
基金
美国国家科学基金会;
关键词
low energy electron diffraction (LEED); surface structure; adsorption;
D O I
10.1016/j.susc.2005.10.053
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
Intermixed structures for alkalis (larger than Li) on close-packed substrates have previously been observed only on Al(1 1 1). This study shows that K forms an ordered intermixed structure on Pb(1 1 1). The structures of clean Pb(1 1 1) and Pb(1 1 1)(root 3 x root 3)R30 degrees-K were studied using dynamical low-energy electron diffraction (LEED). The clean Pb(1 1 1) surface at 47 K was found to be a relaxed version of the bulk structure, in agreement with an earlier study of the same surface [Y.S. Li, F. Jona, P.M. Marcus, Phys. Rev. B 43 (1991) 6337]. At room temperature, adsorption of K on this surface results in a (root 3 x root 3)R30 degrees structure, which was shown using dynamical LEED to consist of K atoms substituted in surface vacancies. The K-Pb bond length was found to be 3.62 +/- 0.3 angstrom, with no significant change to the Pb interlayer spacings. (c) 2005 Elsevier B.V. All rights reserved.
引用
收藏
页码:537 / 541
页数:5
相关论文
共 50 条
  • [21] DFT study of the formation of the Sb-Ag(111) (√3x√3)-R30° surface alloy
    Yakovkin, I. N.
    Petrova, N. V.
    COMPUTATIONAL MATERIALS SCIENCE, 2023, 228
  • [22] Interface structure of Si(111)-(root 3x root 3)R30 degrees-ErSi2-x
    Lohmeier, M
    Huisman, WJ
    Vlieg, E
    Nishiyama, A
    Nicklin, CL
    Turner, TS
    SURFACE SCIENCE, 1996, 345 (03) : 247 - 260
  • [23] √3x√3 R30°→3x3 distortion on the C/Si(111) surface -: art. no. 241307
    Profeta, G
    Ottaviano, L
    Continenza, A
    PHYSICAL REVIEW B, 2004, 69 (24): : 241307 - 1
  • [24] (√3x√3)R30°-(K+CO) coadsorption structure on Pt(111):: Experiment and theory -: art. no. 165424
    Moré, S
    Seitsonen, AP
    Berndt, W
    Bradshaw, AM
    PHYSICAL REVIEW B, 2002, 66 (16) : 1 - 9
  • [25] Investigation of the (√3X√3)R30° Sb/Si(111) structure by means of X-ray photoelectron diffraction
    Westphal, C
    Schürmann, M
    Dreiner, S
    Zacharias, H
    JOURNAL OF ELECTRON SPECTROSCOPY AND RELATED PHENOMENA, 2001, 114 : 437 - 442
  • [26] Electronic and crystal structure of the Pt(111)-(√3 x √3)R30°-K system
    Koroteev, Yu. M.
    Chulkov, E. V.
    SURFACE SCIENCE, 2018, 678 : 99 - 105
  • [27] Comparative photoemission study of Pt(111)(√3x√3)R30° Ce and Pt(111)(2x2) La
    Garnier, M
    Purdie, D
    Breuer, K
    Hengsberger, M
    Baer, Y
    PHYSICAL REVIEW B, 1998, 58 (15): : 9697 - 9699
  • [28] Atomic and electronic structures of Si(111)-(√3x √3)R30°-Au and (6 x 6)-Au surfaces
    Patterson, C. H.
    JOURNAL OF PHYSICS-CONDENSED MATTER, 2015, 27 (47)
  • [29] Dynamical LEED study of Pd(111)-(√3x√3)R30°-Xe -: art. no. 195411
    Caragiu, M
    Seyller, T
    Diehl, RD
    PHYSICAL REVIEW B, 2002, 66 (19):
  • [30] Adsorption study of copper phthalocyanine on Si(111)(√3 x √3)R30°Ag surface
    Menzli, S.
    Ben Hamada, B.
    Arbi, I.
    Souissi, A.
    Laribi, A.
    Akremi, A.
    Chefi, C.
    APPLIED SURFACE SCIENCE, 2016, 369 : 43 - 49