Theory of Surface Dimerization-Induced Ordering in GaInP Alloys

    Research output: Contribution to conferencePaper


    We identify via thermodynamic energy minimization the role of subsurface strain (caused by surface reconstruction and dimerization) in the ordering of Ga0.5In0.5P alloys. Depending on the growth conditions, the alloy surfaces can have either ..beta..2(2x4), c(4x4), or c(8x6) reconstructions, with characteristic 2x1,1x2 and 2x3 RHEED patterns. We show that (i) the 1x2 reconstruction will lead to aCuPtA surface ordering, (ii) a 2x1 reconstruction will lead to a CuPtB ordering, (iii) a 2x3 reconstruction will lead to a 3-period ordering, and (iv) single (double) bilayer steps are stable at low (high) anion chemical potential. These results are in good agreement with recent experimental observations.
    Original languageAmerican English
    Number of pages6
    StatePublished - 1996
    EventMaterials Research Society Symposium - Boston, Massachusetts
    Duration: 28 Nov 199530 Nov 1995


    ConferenceMaterials Research Society Symposium
    CityBoston, Massachusetts

    NREL Publication Number

    • NREL/CP-21708


    Dive into the research topics of 'Theory of Surface Dimerization-Induced Ordering in GaInP Alloys'. Together they form a unique fingerprint.

    Cite this