Journal
JOURNAL OF ELECTRON SPECTROSCOPY AND RELATED PHENOMENA
Volume 110, Issue 1-3, Pages 305-321Publisher
ELSEVIER SCIENCE BV
DOI: 10.1016/S0368-2048(00)00170-5
Keywords
inelastic X-ray scattering; graphite; hexagonal boron nitride; diamond; cubic boron nitride
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This work discusses the theory of resonant inelastic X-ray scattering (RMS) in the s-p bonded solids, graphite, hexagonal boron nitride (hBN), diamond, and cubic boron nitride (cBN). In RIXS, core electrons are resonantly excited to unoccupied states, and X-ray emission (because of radiative core hole-valence electron recombination) is studied. In particular, evolution of the emission spectrum with increasing incident photon energy is of interest. This work begins with the independent-electron approach originally set forth by Ma and co-workers, which is based on the Kramers-Heisenberg formula for light scattering. However, simulations presented also examine effects of the inclusion of the attraction between the promoted electron and core hole in intermediate states. The results suggest that, while RIXS emission spectra can be influenced by that attraction, many features of the independent-electron picture are essentially preserved. The interplay between electron interactions, band-structure effects, and the effects being omitted is discussed. (C) 2000 Published by Elsevier Science B.V.
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