Ph. Avouris, R. Kawai, et al.
The Journal of Chemical Physics
Scanning tunneling microscopy (STM) studies have shown that scattering of surface state electrons by steps and adsorbates leads to long-range oscillations in the local density-of-states (LDOS). Here we examine the nature of the states probed in the vicinity of the scatterer. We find that at steps, the LDOS primarily reflects the Smoluchowski charge-redistribution process. Perturbation of the surface state by the step extends more than 10 Å from the step-edge and induces bulk-surface state mixing. Unusually narrow spectra and delocalized images are observed for adsorbed sulfur on Ag(111) and are explained in terms of the electronic structure changes induced by chemisorption. © 1995.
Ph. Avouris, R. Kawai, et al.
The Journal of Chemical Physics
I.-W. Lyo, Efthimios Kaxiras, et al.
Physical Review Letters
R.A. Wolkow, Ph. Avouris
Journal of Microscopy
David G. Cahill, Ph. Avouris
Applied Physics Letters