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arXiv · 1912.01936

Inelastic x-ray scattering reveals the ergodic to nonergodic transition of salol, a liquid with local order

L. Comez·D. Fioretto·J. Gapinski·G. Monaco·A. Patkowski·W. Steffen
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Abstract

We have studied the high-frequency dynamics of salol by inelastic x-ray scattering over a wide temperature range between 50 and 450 K, across the glass transition. We find that salol efficiently realizes the mechanism of dynamical arrest described by the mode-coupling theory, as manifested by a cusp singularity in the behaviour of the non-ergodicity parameter and a $Q$ dependence of the critical non-ergodicity parameter that is in phase with the static structure factor. These results confront positively the mode-coupling theory with liquids with local order.

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L. Comez, D. Fioretto, J. Gapinski, G. Monaco, A. Patkowski, W. Steffen. 2019-12-04. Inelastic x-ray scattering reveals the ergodic to nonergodic transition of salol, a liquid with local order. https://doi.org/10.5488/cmp.22.43603

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