H. Wende et al., EVIDENCE FOR PHOTOELECTRON BACKSCATTERING BY INTERSTITIAL CHARGE-DENSITIES, Journal of physics. Condensed matter, 9(31), 1997, pp. 427-433
The presence of oscillatory structures in the atomic x-ray absorption
background is reported for the first time for surface-EXAFS of c(2 x 2
)N/Cu(100) and (2 x 3)N/Cu(110). Systematic analysis of this feature (
AXAF'S) and comparison to theory yields new information on the electro
nic structure of the adsorbate-substrate surface bond. Also, angle and
temperature dependent analysis of the AXAFS peak provides qualitative
information about interstitial charge density distribution.