Reference : Detailed characterization of (3X3) iodine adlayer on Pt(111) by unequal-sphere packin...
Scientific journals : Article
Physical, chemical, mathematical & earth Sciences : Chemistry
http://hdl.handle.net/10993/24978
Detailed characterization of (3X3) iodine adlayer on Pt(111) by unequal-sphere packing model
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Tkatchenko, Alexandre mailto [Laboratorio de Nanotecnologia e Ingenieria Molecular, Area de Electroquimica > Departamento de Quimica]
Batina, Nikola [Laboratorio de Nanotecnologia e Ingenieria Molecular, Area de Electroquimica > Departamento de Quimica]
2005
JOURNAL OF CHEMICAL PHYSICS
AMER INST PHYSICS
122
9
Yes (verified by ORBilu)
International
0021-9606
CIRCULATION FULFILLMENT DIV, 2 HUNTINGTON QUADRANGLE, STE 1 N O 1 MELVILLE, NY 11747-4501 USA
[en] A simple unequal-sphere packing model is applied to study the iodine (3x3) adlayer on the Pt(111) surface. By using a newly introduced parameter, defined as the average adsorbate height, three characteristic adlattices, (3x3)-sym, (3x3)-asym, and (3x3)-lin, have been selected and characterized in great detail, including the exact adatom registry. The (3x3)-sym iodine adlattice, observed in many experimental studies appears to be, on average, the closest one to the substrate surface. A special contour plot of average adsorbate height vs X and Y positions of the (3x3) iodine unit cell indicates the existence of two local minima which are related to preferential formation of (3x3)-sym and (3x3)-asym iodine adlattices. Our model gives good agreement with experimental findings, and explains the mechanism of preferential appearance of (3x3)-sym and (3x3)-asym structures. (C) 2005 American Institute of Physics.
http://hdl.handle.net/10993/24978
10.1063/1.1856458
Article

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