CuI growth on copper surfaces under molecular iodine action: influence of the surface anisotropy in the iodine monolayer

被引:24
作者
Andryushechkin, BV [1 ]
Eltsov, KN [1 ]
Shevlyuga, VM [1 ]
机构
[1] Russian Acad Sci, AM Prokhorov Gen Phys Inst, Ctr Nat Sci Res, Moscow 119991, Russia
关键词
scanning tunneling microscopy; surface structure; morphology; roughness; and topography; interface states; halides; copper; iodine;
D O I
10.1016/j.susc.2004.05.045
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
Halide nucleation and growth on monocrystalline copper substrates under molecular halogens action was studied by means of Auger Electron Spectroscopy (AES) and Scanning Tunnelling Microscopy (STM). It was found that copper iodide grows on Cu(1 0 0) and Cu(1 1 1) in a layer-by-layer mode with its outer hexagonal plane parallel to the substrate surface. The STM images of copper iodide demonstrate Moire-like superstructures. The nature of these superstructures is explained in terms of superposition of the copper iodide layer and the underlying "interface" monolayer. It was found that the interface layer preserves geometrical and electronic structure of the saturated chemisorbed iodine monolayer for both copper planes. (C) 2004 Elsevier B.V. All rights reserved.
引用
收藏
页码:203 / 209
页数:7
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