Document Type
Article
Publication Date
2-1-2008
Publication Title
Applied Physics Letters
Abstract
The effects of lattice mismatch strain and atomic size mismatch strain on surface reconstructions are analyzed using density functional theory. These calculations demonstrate the importance of an explicit treatment of alloying when calculating the energies of alloyed surface reconstructions. Lattice mismatch strain has little impact on surface dimer ordering for the α2(2×4) reconstruction of GaAs alloyed with In. However, atomic size mismatch strain induces the surface In atoms to preferentially alternate position, which, in turn, induces an alternating configuration of the surface anion dimers. These results agree well with experimental data for α2(2×4) domains in InGaAs∕GaAs surfaces.
Repository Citation
Bickel, Jessica E.; Modine, Normand A.; Van der ven, Anton; and Millunchick, Joanna Mirecki, "Atomic Size Mismatch Strain Induced Surface Reconstructions" (2008). Physics Faculty Publications. 191.
https://engagedscholarship.csuohio.edu/sciphysics_facpub/191
DOI
10.1063/1.2841846
Version
Publisher's PDF
Publisher's Statement
© 2008 American Institute of Physics
Volume
92
Issue
6
