VIBRATIONAL PROPERTIES OF ZNSE(110) SURFACE

We present a detailed study of surface phonon spectrum on the ZnSe(110 ) surface using the adiabatic bond-charge model within a repeated slab scheme. The structural and electronic information necessary for these calculations is taken from a self-consistent pseudopotential calculat ion. In particular, we find that the surface dynamics of ZnSe(110) are characterised by the presence of a rotational mode at the zone centre , three acoustic modes at a zone edge, and the Fuchs-Kliewer mode at t he zone centre, similar to what is found for III-V(110) in general and GaAs(110) in particular. (C) 1998 Elsevier Science B.V. All rights re served.