High-energy photoemission in silver: resolving d and sp contributions in valence band spectra

We present high-resolution valence band and core level spectra of silver for photoelectron kinetic energies up to 8 keV. At these kinetic energies we estimate a surface contribution of less than 3%. Taking advantage of the favourable sp/d relative cross-sections, a comparison with the calculated density of states is presented. We observe an increasing photoemission intensity when approaching the Fermi level, which we assign to a free-electron-like character in the 5p-band, whereas the principal s-like contribution is located at the bottom of the d-band. The difference between measured and calculated values of the sp/d cross-section ratio is discussed.


Published in:
Journal Of Physics-Condensed Matter, 17, 2671-2679
Year:
2005
Publisher:
Institute of Physics
ISSN:
0953-8984
Keywords:
Laboratories:




 Record created 2010-04-07, last modified 2018-03-17


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