Electronic and vibrational properties of the GaSb(110) surface

Results of ab initio pseudopotential calculations for atomic geometry and e lectronic band structure of the GaSb(110) surface are presented and discuss ed. The calculated atomic geometry is in good agreement with low-energy ele ctron diffraction analysis. Our electronic structure agrees very well with angle-resolved photoemission measurements. The relaxed atomic geometry is u sed for calculations of the surface phonon modes within the adiabatic bond- charge model. The calculated phonon spectrum compares very well with the da ta obtained in a recent high-resolution electron energy-loss spectroscopy e xperiment. We also provide an analysis of the polarisation characteristics of important surface phonon modes. (C) 1999 Elsevier Science B.V. All right s reserved.