Thiolate-induced lateral distortion of the Cu(100) surface
Sheppard, Daniel Crispin, Walker, Marc, McConville, C. F. (Chris F.), Woodruff, D. P., Noakes, T. C. Q. and Bailey, P. (Paul). (2010) Thiolate-induced lateral distortion of the Cu(100) surface. Surface Science, Vol.604 (No.19-20). pp. 1727-1732. ISSN 0039-6028Full text not available from this repository.
Official URL: http://dx.doi.org/10.1016/j.susc.2010.06.022
Medium energy ion scattering (MEIS) with 100 key H+ incident ions has been used to explore adsorbate-induced distortions of the Cu(100) surface in the Cu(100)(2x2)-CH3S (methylthiolate) phase. Previous identification of a methylthiolate-induced pseudo-(100) reconstruction of Cu(111) with Cu-Cu spacings 15% larger than on Cu(100) have led to the suggestion that on Cu(100) in the commensurate (2 x 2) phase a lateral radial expansion of the Cu atoms surrounding the thiolate in a four-fold coordinated hollow should occur. Changes in the scattered ion yields for incidence in [(1) over bar 10], [(1) over bar 00], and [(2) over bar 11]directions are consistent with such a lateral shift of 0.12 +/- 0.04 angstrom, while changes in the MEIS blocking-curve dips indicate that these lateral shifts are accompanied by an outward expansion of the outermost surface layer spacing of 0.08 +/- 0.04 angstrom. This local strain is attributed to adsorbate-induced compressive stress. (C) 2010 Elsevier B.V. All rights reserved.
|Item Type:||Journal Article|
|Subjects:||Q Science > QD Chemistry
Q Science > QC Physics
|Divisions:||Faculty of Science > Physics|
|Library of Congress Subject Headings (LCSH):||Surfaces (Physics), Copper, Thiols, Ions -- Scattering|
|Journal or Publication Title:||Surface Science|
|Publisher:||Elsevier Science BV|
|Official Date:||September 2010|
|Number of Pages:||6|
|Page Range:||pp. 1727-1732|
|Access rights to Published version:||Restricted or Subscription Access|
|Funder:||Engineering and Physical Sciences Research Council (EPSRC)|
 L.H. Dubois, R.G. Nuzzo, Annu. Rev. Phys. Chem. 43 (1992) 437.
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