J.C. Tsang, Ph. Avouris, 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.
J.C. Tsang, Ph. Avouris, et al.
The Journal of Chemical Physics
B. Gumhalter, K. Wandelt, et al.
Physical Review B
R. Martel, J. Misewich, et al.
DRC 2004
Ph. Avouris, J.E. Demuth
The Journal of Chemical Physics