Hard X-rays as pump and probe of atomic motion in oxide glasses

Nowadays powerful X-ray sources like synchrotrons and free-electron lasers are considered as ultimate tools for probing microscopic properties in materials. However, the correct interpretation of such experiments requires a good understanding on how the beam affects the properties of the sample, kno...

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Bibliographic Details
Published in:Scientific reports 2017-06, Vol.7 (1), p.3962-8, Article 3962
Main Authors: Ruta, B., Zontone, F., Chushkin, Y., Baldi, G., Pintori, G., Monaco, G., Rufflé, B., Kob, W.
Format: Article
Language:English
Subjects:
639/301/119
639/766/119
Condensed Matter
Data processing
Disordered Systems and Neural Networks
Humanities and Social Sciences
Lasers
Materials Science
multidisciplinary
Other
Physics
Science
Science (multidisciplinary)
Spectroscopy
Statistical Mechanics
X-rays
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Summary:Nowadays powerful X-ray sources like synchrotrons and free-electron lasers are considered as ultimate tools for probing microscopic properties in materials. However, the correct interpretation of such experiments requires a good understanding on how the beam affects the properties of the sample, knowledge that is currently lacking for intense X-rays. Here we use X-ray photon correlation spectroscopy to probe static and dynamic properties of oxide and metallic glasses. We find that although the structure does not depend on the flux, strong fluxes do induce a non-trivial microscopic motion in oxide glasses, whereas no such dependence is found for metallic glasses. These results show that high fluxes can alter dynamical properties in hard materials, an effect that needs to be considered in the analysis of X-ray data but which also gives novel possibilities to study materials properties since the beam can not only be used to probe the dynamics but also to pump it.
ISSN:2045-2322
2045-2322
DOI:10.1038/s41598-017-04271-x