Details

Autor(en) / Beteiligte

• Lascovich, J.C.
• Santoni, A.

Titel

Study of the occupied electronic density of states of carbon samples by using second derivative carbon KVV Auger spectra

Ist Teil von

• Applied surface science, 1996-11, Vol.103 (3), p.245-253

Ort / Verlag

Amsterdam: Elsevier B.V

Erscheinungsjahr

1996

Quelle

Elsevier Journal Backfiles on ScienceDirect (DFG Nationallizenzen)

Beschreibungen/Notizen

• With the aim of extracting information on the electronic structure of carbon-based materials, double-differentiated C KVV Auger lines of graphite, diamond and different amorphous carbon (a-C) samples have been obtained using the XAES (X-ray excited Auger electron spectroscopy) technique. Comparison with theory and data taken from other experimental methods has shown that the structures found in the second-derivative Auger C KVV spectra can be satisfactorily explained, to first approximation, in the frame of a simplified Auger transitions model and that they reflect the behaviour of the occupied DOS (density of states) of the material under study. The second-derivative C KVV Auger analysis was shown to be very surface sensitive and able to deliver simultaneous information about p- and s-bonding character in the valence band electronic structure otherwise not obtainable with common photoemission techniques like UPS (ultraviolet photoelectron spectroscopy) and XPS (X-ray photoelectron spectroscopy).