QUANTITATIVE STRUCTURE DETERMINATION OF (1X2)-RH(110) BY HELIUM SCATTERING

Authors
BELLMAN A MORGANTE A POLLI M TOMMASINI F CVETKO D DHANAK VR LAUSI A PRINCE KC ROSEI R
Citation
A. Bellman et al., QUANTITATIVE STRUCTURE DETERMINATION OF (1X2)-RH(110) BY HELIUM SCATTERING, Surface science, 298(1), 1993, pp. 1-5
Citations number
17
Categorie Soggetti
Chemistry Physical
Journal title
Surface science → ACNP
ISSN journal
00396028
Volume
298
Issue
1
Year of publication
1993
Pages
1 - 5
Database
ISI
SICI code
0039-6028(1993)298:1<1:QSDO(B>2.0.ZU;2-5
Abstract
A new method for determining the structure of open surfaces is describ ed and applied to the (1 x 2)-Rh(110) surface. Measurements of helium diffraction and specular reflectivity are analysed by close-coupling c alculations, using a model potential given by the superposition of pse udo-pairwise terms. The measurements show that the (1 x 2)-Rh(110) sur face has a missing row structure with a relaxation of the first interl ayer spacing of 21%. The electronic charge of the topmost atoms as see n by He is about 7% lower for the (1 x 2) structure than for the unrec onstructed one.