Walker, Marc, Brown, M. G., Draxler, M., Dowsett, M. G., McConville, C. F. (Chris F.), Noakes, T. and Bailey, P.. (2011) Structural analysis of the Cu(100)-p(2×2)-Sn surface using low and medium energy ion scattering spectroscopies. Physical Review B (Condensed Matter and Materials Physics), Vol.83 (No.8). 085424. ISSN 1098-0121

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Abstract

The atomic structure of the Cu(100)-p(2 x 2)-Sn surface has been studied using medium energy ion scattering (MEIS), co-axial impact collision ion scattering spectroscopy (CAICISS), low energy electron diffraction (LEED), and Auger electron spectroscopy (AES). The complex p(2 x 2)-based LEED pattern with antiphase domains was observed at an estimated Sn coverage of 0.21 ML, confirmed with AES. The existence of subsurface Sn atoms was immediately ruled out by the lack of blocking dips in the MEIS Sn scattered yield, whereas the initial analysis of the CAICISS data ruled out the three overlayer models, allowing quantitative fitting to focus on the Cu-Sn substitutional surface alloy model. The fitted model showed that the surface relaxed outward following Sn deposition and also demonstrated an out-of-plane shift of Sn atoms in the outermost layer.

Item Type:	Journal Article
Subjects:	Q Science > QC Physics
Divisions:	Faculty of Science > Physics
Journal or Publication Title:	Physical Review B (Condensed Matter and Materials Physics)
Publisher:	American Physical Society
ISSN:	1098-0121
Date:	25 February 2011
Volume:	Vol.83
Number:	No.8
Page Range:	085424
Identification Number:	10.1103/PhysRevB.83.085424
Status:	Peer Reviewed
Publication Status:	Published
Access rights to Published version:	Restricted or Subscription Access
Funder:	Engineering and Physical Sciences Research Council (EPSRC)
Grant number:	EP/E003370/1 (EPSRC)
URI:	http://wrap.warwick.ac.uk/id/eprint/41904

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