Model for the energetics of Si and Ge (111) surfaces

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The reconstructions observed on the annealed (111) surfaces of Si and Ge can be explained on the basis of a simple model of the surface energetics. The driving force for the Si 7×7 reconstruction is the formation of dimer-row domain walls, which order in a triangular pattern for topological reasons. Adatoms play an incidental role only. Chemical or strain-induced variations in the parameters of the model can lead to transitions between energetically competitive 7×7, 5×5, c2×8, and other structures.

Original languageEnglish (US)
Pages (from-to)6209-6212
Number of pages4
JournalPhysical Review B
Issue number11
StatePublished - Jan 1 1987
Externally publishedYes

All Science Journal Classification (ASJC) codes

  • Condensed Matter Physics

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