Strain-Driven Mesoscopic Reconstruction of the As/Ge(111) Surface

W. E. McMahon, Iskander G. Batyrev, J. M. Olson, S. B. Zhang

Research output: Contribution to journalArticlepeer-review

7 Scopus Citations


A truly mesoscopic-scale surface was reconstructed by scanning tunneling microscope (STM) studies of As/Ge(111) surfaces. A (5-7-5)-ringed trench structure that agrees with all the main features revealed by experiment was proposed. First-principles energy calculations combined with continuum elasticity theory showed that such reconstructions are driven by surface stresses produced by surface As atoms. Finally, it was found that a simple model that includes both force monopoles and force dipoles adequately describes the trench-trench interaction. The calculated tile size of N=30 agreed reasonably well with the experimentally observed range of N=30 to 50.

Original languageAmerican English
Article number076103
Pages (from-to)076103/1-076103/4
Number of pages4
JournalPhysical Review Letters
Issue number7
StatePublished - 12 Aug 2002

NREL Publication Number

  • NREL/JA-520-31685


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