English (United Kingdom)

https://curated-unify.zendy.io/wp-json/zendy-region/v1/featured_content/oa?rat=en

https://curated-unify.zendy.io/wp-json/zendy-region/v1/highlighted_journal/

Global: Zendy Plus annual

Presents the access of premium content as premium feature

Premium Content

Presents the keyphrase highlighting as premium feature

Keyphrase Highlighting

Presents the summarisation as premium feature

Summarisation

Insights

Presents the pdf analysis as premium feature

PDF Analysis

Presents the zaia usage as premium feature

ZAIA

Global: Zendy Tools annual

Global: Zendy Free Plan

Global: Zendy Tools monthly

Global: Zendy Plus monthly

The oxygen and silicon dynamics in silica is compared via computersimulations. In agreement with experimental data and previous simulations adecoupling of oxygen and silicon dynamics is observed upon cooling. The originof this decoupling is studied in the framework of the potential energylandscape. From analysis of the transition features between neighboringsuperstructures of minima, denoted metabasins, the differences between theoxygen and the silicon dynamics can be quantified. The decoupling can beexplicitly related to the presence of generalized rotational processes, givingrise to oxygen but not to silicon displacement. Closer analysis of theseprocesses yields important insight into the nature of the potential energylandscape of silica. The physical picture of relaxation processes in silica,obtained in previous work for the oxygen dynamics, is consistent with thedecoupling effects, elucidated here

Origin of the decoupling of oxygen and silicon dynamics in liquid silica as expressed by its potential energy landscape