K. Schonhammer et O. Gunnarsson, SHAPE OF CORE-LEVEL SPECTRA IN ADSORBATES (REPRINTED FROM SOLID-STATECOMMUN, VOL 23, PG 691-693, 1977), Solid state communications, 88(11-12), 1993, pp. 1093-1095
The spectrum of core levels in adsorbates is calculated taking into ac
count the transfer of screening charge to the adsorbate. An exact nume
rical solution for a model including this effect is obtained. The posi
tion of the main peak and the overall shape of the spectrum are found
to depend strongly on the width and position of the unoccupied adsorba
te valence level.