L. Houssiau et al., Surface structure and electron density dependence of scattered Ne+ ion fractions from Cd- and S-terminated CdS{0001} surfaces, PHYS REV L, 81(23), 1998, pp. 5153-5156
Experimental measurements of the magnitudes and azimuthal anisotropies of 4
keV Ne+ scattered ion fractions from both the Cd- and S-terminated surface
s of CdS{0001} exhibit high sensitivity to both surface structure and elect
ron density. Using a density functional approach, a clear correlation has b
een demonstrated between these Ne+ ion fractions and the lateral variation
of the electrostatic potential along the outgoing trajectories of the scatt
ered Ne atoms. The observed anisotropy in the ion fractions is a result of
the variations in surface to atom electron transfer rates due to tunneling
barriers introduced by the electrostatic potentials. [S0031-9007(98)07848-X
].