Nuclear quadrupole interactions associated with adsorbed halogen and chalcogen atoms at semiconductor surfaces

Abstract

As part of a program for studying hyperfine interactions at surfaces of condensed matter systems, we have studied the nuclear quadrupole interactions associated with group VI and VII atoms adsorbed on silicon surface. The electronic structures used for these investigations were determined through the self-consistent Hartree-Fock cluster procedure using sizeable clusters of atoms to simulate the infinite systems. Results will be presented for the nuclei of halogen atoms adsorbed on the silicon (111) surface and for sulfur and selenium atoms on the (110) surface.