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The European Physical Journal Special Topics

, Volume 189, Issue 1, pp 141–145 | Cite as

Localization phenomena in models of ion-conducting glass formers

  • J. Horbach
  • T. Voigtmann
  • F. Höfling
  • T. Franosch
Regular Article

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.

Keywords

Binary Mixture European Physical Journal Special Topic Localization Transition Packing Fraction Obstacle Density 
These keywords were added by machine and not by the authors. This process is experimental and the keywords may be updated as the learning algorithm improves.

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Copyright information

© EDP Sciences and Springer 2010

Authors and Affiliations

  • J. Horbach
    • 1
  • T. Voigtmann
    • 1
    • 2
  • F. Höfling
    • 3
    • 4
    • 7
  • T. Franosch
    • 5
    • 6
  1. 1.Institut für Materialphysik im WeltraumKölnGermany
  2. 2.Zukunftskolleg und Fachbereich Physik, Universität KonstanzKonstanzGermany
  3. 3.Rudolf Peierls Centre for Theoretical PhysicsOxfordUK
  4. 4.Max-Planck-Institut für MetallforschungStuttgartGermany
  5. 5.Institut für Theoretische Physik, Universität Erlangen-NürnbergErlangenGermany
  6. 6.Arnold Sommerfeld Center for Theoretical Physics (ASC) and Center for NanoScience (CeNS) Fakultät für Physik, Ludwig-Maximilians-Universität MünchenMünchenGermany
  7. 7.Institut für Theoretische und Angewandte Physik, Universität StuttgartStuttgartGermany

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