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Localization phenomena in models of ion-conducting glass formers

Horbach, Jürgen and Voigtmann, Thomas and Höfling, Felix and Franosch, Thomas (2010) Localization phenomena in models of ion-conducting glass formers. European Physical Journal - Special Topics, pp. 141-145. Springer. DOI: 10.1140/epjst/e2010-01316-x ISSN 1951-6401

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Abstract

The mass transport in soft-sphere mixtures of small and big particles as well as in the disordered Lorentz gas (LG) model is studied using molecular dynamics (MD) computer simulations. The soft-sphere mixture shows anomalous small-particle diffusion signifying a localization transition separate from the big-particle glass transition. Switching off small-particle excluded volume constraints slows down the small-particle dynamics, as indicated by incoherent intermediate scattering functions. A comparison of logarithmic time derivatives of the mean-squared displacements reveals qualitative similarities between the localization transition in the soft-sphere mixture and its counterpart in the LG. Nevertheless, qualitative differences emphasize the need for further research elucidating the connection between both models.

Item URL in elib:https://elib.dlr.de/66105/
Document Type:Article
Title:Localization phenomena in models of ion-conducting glass formers
Authors:
AuthorsInstitution or Email of AuthorsAuthors ORCID iD
Horbach, JürgenMP, DLRUNSPECIFIED
Voigtmann, ThomasMP, DLRUNSPECIFIED
Höfling, FelixUniversität StuttgartUNSPECIFIED
Franosch, ThomasUniversität Erlangen-NürnbergUNSPECIFIED
Date:12 November 2010
Journal or Publication Title:European Physical Journal - Special Topics
Refereed publication:Yes
Open Access:No
Gold Open Access:No
In SCOPUS:Yes
In ISI Web of Science:Yes
DOI :10.1140/epjst/e2010-01316-x
Page Range:pp. 141-145
Publisher:Springer
Series Name:Special Topics
ISSN:1951-6401
Status:Published
Keywords:GLASS TRANSITION; LOCALIZATION TRANSITION; COMPUTER SIMULATION; MODE COUPLING THEORY; LORENTZ GAS; SCALING CONCEPTS
HGF - Research field:Aeronautics, Space and Transport (old)
HGF - Program:Space (old)
HGF - Program Themes:W FR - Forschung unter Weltraumbedingungen (old)
DLR - Research area:Space
DLR - Program:W FR - Forschung unter Weltraumbedingungen
DLR - Research theme (Project):W - Vorhaben Materialwissenschaftliche Forschung (old)
Location: Köln-Porz
Institutes and Institutions:Institute of Materials Physics in Space
Deposited By: Horbach, Dr.rer.nat. Jürgen
Deposited On:05 Nov 2010 10:59
Last Modified:14 Dec 2019 04:20

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