Abstract
We have applied the ab initio pseudopotential frozen-phonon approach to study phonon frequencies and eigenmodes for III-V(110) surfaces. For GaAs our results at the \ensuremath{\Gamma}\ifmmode\bar\else\textasciimacron\fi{} and X\ifmmode\bar\else\textasciimacron\fi{} points are in good agreement with data from recent high-resolution electron-energy-loss spectroscopy and He-scattering experiments. In the energy range of the controversially discussed ${\mathit{A}}_{1}$ phonon we observe an eigenmode with large atomic amplitudes at the surface, which, however, is mixed with bulk states. In order to investigate the chemical trend, additional calculations for surface \ensuremath{\Gamma}\ifmmode\bar\else\textasciimacron\fi{} phonons of InAs, GaP, and InP are presented. We observe a rather similar dynamical behavior for all these surfaces with modifications mainly due to the different masses of group-III and -V elements.
Sign-in/Register to access full text options 
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a callDisclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.
