Resolving the Ga ad-dimer location and orientation on the Si(100) surface

Y. Qian, M. J. Bedzyk, S. Tang, Arthur J Freeman, G. E. Franklin

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Quantitative x-ray standing wave measurements of the Ga ad-dimer bond length, orientation, and location for the Si(100)-(2 × 2):Ga surface combined with first-principles molecular cluster calculations on four different ad-dimer models lead to the conclusion that Ga atoms form ad-dimers which are aligned parallel to the underlying Si dimers and lie in between Si dimer rows at the valley bridge site.

Original languageEnglish
Pages (from-to)1521-1524
Number of pages4
JournalPhysical Review Letters
Issue number11
Publication statusPublished - 1994


ASJC Scopus subject areas

  • Physics and Astronomy(all)

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