Please use this identifier to cite or link to this item:
Title: Low-energy electron diffraction study of oxygen-induced reconstructions on Cu(210)
Authors: Guo, Y.P. 
Tan, K.C.
Wang, H.Q. 
Huan, C.H.A. 
Wee, A.T.S. 
Issue Date: 15-Oct-2002
Source: Guo, Y.P.,Tan, K.C.,Wang, H.Q.,Huan, C.H.A.,Wee, A.T.S. (2002-10-15). Low-energy electron diffraction study of oxygen-induced reconstructions on Cu(210). Physical Review B - Condensed Matter and Materials Physics 66 (16) : 1654101-1654108. ScholarBank@NUS Repository.
Abstract: The oxygen-induced reconstructions on Cu(210) have been investigated by low-energy electron diffraction (LEED). The adsorption of oxygen on Cu(210) leads to a series of (n × 1) (n= 2,3) reconstructions comprising Cu-O chains along the [001] direction on the topmost layer. The Cu(210)-(2 × 1)O structure is found to be the most thermodynamically favorable phase. A quantitative LEED analysis, performed by comparing the simulation results of different 2 × 1 and 3 × 1 models, confirms an added row model with oxygen sitting on the long bridge sites along the [001] direction. The oxygen atoms sit in a deeper position from the surface than the topmost Cu atoms, and the Cu-O rows relax upward. In the Cu(210)- (3 × 1)O structure with an oxygen coverage of 2/3 ML, oxygen atoms reside deeper than the accompanying Cu atoms in one Cu-O row, while in the adjacent row, oxygen sits higher than the Cu atoms. The nearest and second nearest neighbor Cu-O distances are determined to be 1.82±0.03 and 1.96±0.06 Å respectively for both 2 × 1 and 3 × 1 reconstructions. The formation of relatively strong Cu-O bonds appears to be the driving force for both reconstructions.
Source Title: Physical Review B - Condensed Matter and Materials Physics
ISSN: 01631829
Appears in Collections:Staff Publications

Show full item record
Files in This Item:
There are no files associated with this item.

Page view(s)

checked on Jan 12, 2018

Google ScholarTM


Items in DSpace are protected by copyright, with all rights reserved, unless otherwise indicated.