Influence of dimer buckling on dimer diffusion: A scanning tunneling microscopy study

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Abstract

The diffusion of Ge dimers along the substrate dimer rows of Ge(001) has been investigated with scanning tunneling microscopy. The jump frequency of on-top Ge dimers along symmetric dimer rows at room temperature is found to be eight times higher than the diffusion along asymmetric dimer rows (0.36 s–1 versus 0.044 s–1). We ascribe this difference to limitations associated with the rocking motion that a dimer has to perform while diffusing along asymmetric dimer rows.
Original languageUndefined
Pages (from-to)073311-
Number of pages3
JournalPhysical review B: Condensed matter and materials physics
Volume73
Issue number7
DOIs
Publication statusPublished - 2006

Keywords

  • METIS-232780
  • IR-59096

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