Subpicosecond interconversion of buckled and symmetric dimers on Si(100)

Paul C. Weakliem, Gregory W. Smith, Emily A. Carter

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58 Scopus citations


Finite temperature molecular dynamics simulations provide the first theoretical evidence for subpicosecond dynamical behavior on a defect-free Si(100) surface; the instantaneous distribution of buckled and symmetric dimers is found to be ∼ 2: 3; buckled dimers rapidly interconvert with symmetric dimers, with the buckling direction alternating along a row; only symmetric dimers are observed on a time average; and we find that collective motion of ≥ 5 Si layers is involved in the reconstruction. Thus, the observed surface structure should depend on experimental time scales.

Original languageEnglish (US)
Pages (from-to)L219-L223
JournalSurface Science
Issue number3
StatePublished - Jun 2 1990
Externally publishedYes

All Science Journal Classification (ASJC) codes

  • Condensed Matter Physics
  • Surfaces and Interfaces
  • Surfaces, Coatings and Films
  • Materials Chemistry


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