| Popis: |
We have measured the CVV Auger spectra of Fe and S from FeS 2 and compared them, after deconvoluting, with results from other techniques and with band structure calculations. These Auger spectra exhibit a number of interesting features, including a strong feature similar to that found in metallic Fe, previously assigned to an ‘autoionisation’ process. The effective hole-hole interaction energy ( U eff ) was calculated for each of the three Auger lines investigated. We found in each case that U eff was less than twice the width of the valence band, so that these spectra could be considered as ‘bandlike’ and compared with the theoretical calculations of the density of states. The corrected Fe Auger spectra were compared with calculations made by Bullet [ J Phys C15 , 6163 (1982)] and were found to be in broad agreement. |
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