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Chlorine adsorption on Au(111): Chlorine overlayer or surface chloride?

Journal of the American Chemical Society, ISSN: 0002-7863, Vol: 130, Issue: 11, Page: 3560-3565
2008
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Article Description

We report the first scanning tunneling microscope (STM) investigation, combined with density functional theory calculations, to resolve controversy regarding the bonding and structure of chlorine adsorbed on Au(111). STM experiments are carried out at 120 K to overcome instability caused by mobile species upon chlorine adsorption at room temperature. Chlorine adsorption initially lifts the herringbone reconstruction. At low coverages (<0.33 ML), chlorine binds to the top of Au(111)-(1 x 1) surface and leads to formation of an overlayer with (√3 x √3)R30° structure at 0.33 ML. At higher coverages, packing chlorine into an overlayer structure is no longer favored. Gold atoms incorporate into a complex superlattice of a Au-Cl surface compound. © 2008 American Chemical Society.

Bibliographic Details

Gao, Weiwei; Baker, Thomas A; Zhou, Ling; Pinnaduwage, Dilini S; Kaxiras, Efthimios; Friend, Cynthia M

American Chemical Society (ACS)

Chemical Engineering; Chemistry; Biochemistry, Genetics and Molecular Biology

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