Role of interdimer interactions in NH3 dissociation on si(100)-(2x1)

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 prop...

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Bibliographic Details
Published in:Physical review letters 2001-02, Vol.86 (6), p.1046-1049
Main Authors: Queeney, K T, Chabal, Y J, Raghavachari, K
Format: Article
Language:English
Online Access:Get full text
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Summary: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.
ISSN:0031-9007
DOI:10.1103/PhysRevLett.86.1046