The structural analysis of Cu(111)-Te (√3 x √3)R30° and (2√3 x 2√3)R30° surface phases by quantitative LEED and DFT

SURFACE SCIENCE

卷:622

Article

Lahti, M.¹  Chaudhuri, A.¹  Pussi, K.¹  Hesp, D.^2,3  McLeod, I. M.^2,3  Dhanak, V. R.^2,3  King, M. O.^4,5  Kadodwala, M.⁴  MacLaren, D. A.⁵ 

[1] Lappeenranta Univ Technol, Dept Math & Phys, FIN-53051 Lappeenranta, Finland

[2] Univ Liverpool, Dept Phys, Liverpool L69 3BX, Merseyside, England

[3] Univ Liverpool, Stephenson Inst Renewable Energy, Liverpool L69 3BX, Merseyside, England

[4] Univ Glasgow, Sch Chem, Glasgow G12 8QQ, Lanark, Scotland

[5] Univ Glasgow, Sch Phys & Astron, SUPA, Glasgow G12 8QQ, Lanark, Scotland

关键词: Low energy electron diffraction (LEED);    Density functional theory (OFF);    Copper telluride;   

DOI  :  10.1016/j.susc.2013.11.018

来源: Elsevier

【 摘 要 】

The chemisorption of tellurium on atomically clean Cu(111) surface has been studied under ultra-high vacuum conditions. At room temperature, the initial stage of growth was an ordered (2 root 3 x 2 root 3)R30 degrees phase (0.08 ML). An ordered (root 3 x root 3)R30 degrees phase is formed at 0.33 ML coverage of Te. The adsorption sites of the Te atoms on the Cu(111) surface at 0.08 ML and 0.33 ML coverages are explored by quantitative low energy electron diffraction (LEED) and density functional theory (DFf). Our results indicate that substitutional surface alloy formation starts at very low coverages. (C) 2013 Elsevier B.V. All rights reserved.

【 授权许可】

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