English
 
User Manual Privacy Policy Disclaimer Contact us
  Advanced SearchBrowse

Item

ITEM ACTIONSEXPORT
  Temperature-dependent defect dynamics in the network glass SiO2

Vollmayr-Lee, K., & Zippelius, A. (2013). Temperature-dependent defect dynamics in the network glass SiO2. Physical Review E, 88: 052145, pp. 052145-1-052145-9. doi:10.1103/PhysRevE.88.052145.

Item is

Basic

show hide
Item Permalink: http://hdl.handle.net/11858/00-001M-0000-0029-0F8F-5 Version Permalink: http://hdl.handle.net/11858/00-001M-0000-0029-0F90-0
Genre: Journal Article

Files

show Files

Locators

show

Creators

show
hide
 Creators:
Vollmayr-Lee, Katharina, Author
Zippelius, Annette1, Author              
Affiliations:
1Fellow Group Polymers, complex fluids and disordered systems, Max Planck Institute for Dynamics and Self-Organization, Max Planck Society, ou_2063298              

Content

show
hide
Free keywords: -
 Abstract: We investigate the long time dynamics of a strong glass former, SiO2, below the glass transition temperature by averaging single-particle trajectories over time windows which comprise roughly 100 particle oscillations. The structure on this coarse-grained time scale is very well defined in terms of coordination numbers, allowing us to identify ill-coordinated atoms, which are called defects in the following. The most numerous defects are O-O neighbors, whose lifetimes are comparable to the equilibration time at low temperature. On the other hand, SiO and OSi defects are very rare and short lived. The lifetime of defects is found to be strongly temperature dependent, consistent with activated processes. Single-particle jumps give rise to local structural rearrangements. We show that in SiO2 these structural rearrangements are coupled to the creation or annihilation of defects, giving rise to very strong correlations of jumping atoms and defects.

Details

show
hide
Language(s): eng - English
 Dates: 2013-11-27
 Publication Status: Published in print
 Pages: -
 Publishing info: -
 Table of Contents: -
 Rev. Method: Internal
 Identifiers: eDoc: 673941
URI: 10.1103/PhysRevE.88.052145
DOI: 10.1103/PhysRevE.88.052145
 Degree: -

Event

show

Legal Case

show

Project information

show

Source 1

show
hide
Title: Physical Review E
  Alternative Title : Phys. Rev. E
Source Genre: Journal
 Creator(s):
Affiliations:
Publ. Info: -
Pages: - Volume / Issue: 88 Sequence Number: 052145 Start / End Page: 052145-1 - 052145-9 Identifier: -