title: Role of interdimer interactions in NH3 dissociation on si(100)-(2x1).
abstract: The dissociation of NH3 on Si(100)-(2x1) is investigated by a combination of infrared absorption spectroscopy and density functional cluster calculations, revealing that this reaction is governed by a complex set of interdimer interactions involving both bare and adsorbate-covered Si dimers. We propose that such adsorbate-induced changes in the electronic structure of neighboring dimers may have general implications for controlling the two-dimensional ordering of reactions on the dimerized Si(100) surface.
authors.affiliation: Bell Laboratories, Lucent Technologies, Murray Hill, New Jersey 07974, USA.
authors.forename: K T
authors.initials: KT
authors.lastname: Queeney
authors.forename: Y J
authors.initials: YJ
authors.lastname: Chabal
authors.forename: K
authors.initials: K
authors.lastname: Raghavachari