Influence of step-induced anti-phase boundaries on the surface morphology of zincblende-type semiconductors
Experimentelle Physik II, Universität
Würzburg Am Hubland, Würzburg, D-97074, Germany
Corresponding author: email@example.com
Accepted: 30 May 2002
Using high-resolution low-energy electron diffraction, we find a “correlation” of the reconstruction of the surface across - and -oriented steps. The difference of the corresponding step vectors is incompatible with the reconstruction. Thus intersection points of - and -oriented steps at 2D island corners or kinks induce anti-phase boundaries along the direction. This mechanism yields a non-local contribution to the step energy which generally could be important for the explanation of step morphologies, e.g., of the recently observed, self-organized checkerboard-like arrangement of nano-terraces on a vicinal surface.
PACS: 68.35.Bs – Structure of clean surfaces (reconstruction) / 61.14.Hg – Low-energy electron diffraction (LEED) and reflection high-energy electron diffraction (RHEED)
© EDP Sciences, 2002