The use of momentum-resolved inelastic x-ray scattering with meV energy resolution to study the high-frequency atomic dynamics in disordered systems is here reviewed. The typical realization of this experiment is described together with some common models used to interpret the measured spectra and to extract parameters of interest for the investigation of disordered systems. With the help of some selected examples, the present status of the field is discussed. Particular attention is given to those results which are still open for discussion or controversial, and which will require further development of the technique to be fully solved. Such an instrumental development seems nowadays possible at the light of recently proposed schemes for advanced inelastic x-ray scattering spectrometers.
Nous passons ici en revue l'utilisation de la diffusion inélastique de rayons X résolue en impulsion et à haute résolution en énergie (meV) pour l'étude de la dynamique atomique haute fréquence dans les systèmes désordonnés. Nous décrivons la mise en œuvre typique de cette expérience, ainsi que quelques modèles couramment utilisés pour l'interprétation des spectres expérimentaux et l'extraction de paramètres pertinents dans l'étude de ces systèmes. Sur la base d'exemples expérimentaux concrets, nous discutons l'état de l'art de cette technique. Nous nous focalisons tout particulièrement sur un certain nombre de questions ouvertes et autres résultats encore controversés, dont l'interprétation définitive nécessitera des développements techniques ultérieurs. Nous montrons finalement qu'à la lumière des récentes propositions pour la réalisation de spectromètres avancés dédiés à la diffusion inélastique des rayons X, ces développements semblent être à notre portée.
Mot clés : Diffusion inélastique de rayons X, Systèmes désordonnés
Giulio Monaco 1
@article{CRPHYS_2008__9_5-6_608_0,
author = {Giulio Monaco},
title = {High-resolution inelastic x-ray scattering to study the high-frequency atomic dynamics of disordered systems},
journal = {Comptes Rendus. Physique},
pages = {608--623},
publisher = {Elsevier},
volume = {9},
number = {5-6},
year = {2008},
doi = {10.1016/j.crhy.2007.10.017},
language = {en},
}
TY - JOUR AU - Giulio Monaco TI - High-resolution inelastic x-ray scattering to study the high-frequency atomic dynamics of disordered systems JO - Comptes Rendus. Physique PY - 2008 SP - 608 EP - 623 VL - 9 IS - 5-6 PB - Elsevier DO - 10.1016/j.crhy.2007.10.017 LA - en ID - CRPHYS_2008__9_5-6_608_0 ER -
Giulio Monaco. High-resolution inelastic x-ray scattering to study the high-frequency atomic dynamics of disordered systems. Comptes Rendus. Physique, Volume 9 (2008) no. 5-6, pp. 608-623. doi : 10.1016/j.crhy.2007.10.017. https://comptes-rendus.academie-sciences.fr/physique/articles/10.1016/j.crhy.2007.10.017/
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