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Adsorbate‐induced reconstructions and nanostructures on high‐index copper surfaces
Author(s) -
Wee A. T. S.,
Guo Y. P.,
Tan K. C.,
Wang H. Q.,
Leong T. K.,
Huan C. H. A.
Publication year - 2001
Publication title -
surface and interface analysis
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.52
H-Index - 90
eISSN - 1096-9918
pISSN - 0142-2421
DOI - 10.1002/sia.1043
Subject(s) - faceting , copper , nanostructure , scanning tunneling microscope , surface reconstruction , adsorption , oxygen , crystallography , chemistry , diffraction , electron diffraction , low energy electron diffraction , materials science , analytical chemistry (journal) , surface (topology) , nanotechnology , geometry , optics , physics , mathematics , organic chemistry , chromatography
High‐index copper surfaces generally show a strong tendency to reconstruct, forming one‐ or even two‐dimensional periodic nanostructures. In this paper, a survey will be presented of the various oxygen‐induced reconstructions reported on high‐index copper surfaces. In particular, the reconstructions of the Cu(210)–O system are presented, as revealed by low‐energy electron diffraction (LEED) and scanning tunnelling microscopy (STM). The adsorption of oxygen leads to a series of ( n × 1) ( n = 4,3,2) surface reconstructions, the Cu(210)–(2 × 1)O structure being the most stable. Quantitative LEED analysis confirms an added row model comprising Cu — O — Cu rows along the [001] direction on the topmost layer with oxygen at the long bridge sites. A range of faceting behaviour and nanostructure formation is also observed for the Cu(210)–O and Cu(210)–Br systems, and compared with other high‐ and low‐index Cu surfaces. Copyright © 2001 John Wiley & Sons, Ltd.