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  4. High-energy photoemission in silver: resolving d and sp contributions in valence band spectra
 
research article

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

Cautero, G.
•
Cautero, M.
•
Fondacaro, A.
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2005
Journal of Physics: Condensed Matter

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.

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