Hamalainen, K.
, Galambosi, S.
, Soininen, J.
, Shirley, E.
, Shukla, A.
and Rueff, J.
(2002),
Momentum Dependence of Fluorine K-Edge Core Exciton in LiF, Physical Review B (Condensed Matter and Materials Physics)
(Accessed April 17, 2024)
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Momentum Dependence of Fluorine K-Edge Core Exciton in LiF
Published
Author(s)
K Hamalainen, S Galambosi, J A. Soininen, , A Shukla, J P. Rueff
Abstract
Non-resonant inelastic x-ray scattering spectra have been measured with an energy loss close to the fluorine K-edge of lithium fluoride. The extracted dynamic structure factor is well reproduced by an ab initio computational scheme that takes the electron-hole interaction into account. A systematic study of the momentum-transfer dependence with high energy resolution in the close vicinity of the K-edge shows clear deviations from the dipole approximation. With the help of the calculations, it is shown that the observed deviations are becuase of an s-type exciton.Citation
Physical Review B (Condensed Matter and Materials Physics)
Volume
65
Issue
No. 15
Pub Type
Journals
Keywords
compton, exciton, LiF, scattering, symmetry, x-ray
Citation
Created March 31, 2002, Updated October 12, 2021