{111} Surfaces of Compounds with Zincblende Structure

  • Winfried Mönch
Part of the Springer Series in Surface Sciences book series (SSSUR, volume 26)


Bulk-terminated {111}-1 × 1 surfaces of zincblende-structure compounds would be either cation- or anion-terminated. Such [111]- and [1̄1̄1̄]-oriented surfaces, respectively, are found to be 2 × 2-reconstructed. The GaAs(111)-2 × 2 structure results from the existence of Ga vacancies which expose three As atoms of the second layer. The atomic arrangement is thus similar to the Ga-As zigzag chains on cleaved (110)-1 × 1 surfaces. The GaAs(1̄1̄1̄)-2 × 2 reconstruction, on the other hand, consists of Astrimers on a complete As layer beneath. The presence of As vacancies is excluded since their formation is endothermic on such surfaces.


Scanning Tunneling Microscopy Atomic Arrangement Scan Tunneling Microscope Image Surface Anion Vacancy Model 
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Copyright information

© Springer-Verlag Berlin Heidelberg 1995

Authors and Affiliations

  • Winfried Mönch
    • 1
  1. 1.Laboratorium für FestkörperphysikGerhard-Mercator-Universität DuisburgDuisburgGermany

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