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Momentum Dependence of Fluorine K-Edge Core Exciton in LiF

Published

Author(s)

K Hamalainen, S Galambosi, J A. Soininen, Eric L. Shirley, 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

Keywords

compton, exciton, LiF, scattering, symmetry, x-ray

Citation

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 15, 2024)
Created March 31, 2002, Updated October 12, 2021