Y. Uehara et al., Identification of electronic transitions localized at a single oxygen atomadsorbed on Cu(110)-(2 X 1) surface, SOL ST COMM, 119(12), 2001, pp. 671-674
We have identified electronic transitions tightly localized at a single oxy
gen atom adsorbed on the Cu(110)-(2 X 1) surface, by means of scanning tunn
eling microscope (STM) light emission spectroscopy. The emission spectrum m
easured with the STM tip located directly over the oxygen atom shows two pe
aks corresponding to states located similar to 200 and similar to 300 meV a
bove the Fermi level of Cu. These peaks are identified with unoccupied stat
es localized at a single oxygen atom. (C) 2001 Published by Elsevier Scienc
e Ltd.