UNSPECIFIED (2003) Some structural issues in surface alloys and alloy surfaces: rumpling, stacking faults and disorder. In: Conference on Applied Surface Modeling, AUG 20-23, 2002, CLEVELAND, OHIO.

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Abstract

Recent experimental studies of the structure of surface alloy phases and of the surface of bulk alloys have revealed the existence of interfacial stacking faults in Sb on Cu(I 1 1) and Ag(l 1 1), the reduction in effective atomic radii manifested by reduced rumpling amplitudes in surface alloys, and evidence for local disorder at the surface Of Pt25Rh75(l 1 1). A brief review of some of these phenomena and their associated systematics is presented, together with the results of new density functional theory (DFT) calculations aimed at gaining insight into the issue of surface alloy rumpling and effective atomic radii in such surface phases. In particular, by comparing interatomic distances in bulk and surface alloys we show the reduced rumpling in surface alloys is a true surface effect, independent of the definition of atomic radius. (C) 2003 Elsevier Science B.V. All rights reserved.

Item Type:	Conference Item (UNSPECIFIED)
Subjects:	Q Science > QD Chemistry T Technology > TA Engineering (General). Civil engineering (General) Q Science > QC Physics
Journal or Publication Title:	Surface Science
Publisher:	ELSEVIER SCIENCE BV
ISSN:	0169-4332
Date:	15 October 2003
Volume:	219
Number:	1-2
Number of Pages:	10
Page Range:	pp. 1-10
Publication Status:	Published
Title of Event:	Conference on Applied Surface Modeling
Location of Event:	CLEVELAND, OHIO
Date(s) of Event:	AUG 20-23, 2002
URI:	http://wrap.warwick.ac.uk/id/eprint/9287

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