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Hyperuniform density fluctuations and diverging dynamic correlations in periodically driven colloidal suspensions

Tjhung, Elsen ; Berthier, Ludovic

Physical review letters, 2015-04, Vol.114 (14), p.148301-148301, Article 148301 [Periódico revisado por pares]

United States: American Physical Society

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  • Título:
    Hyperuniform density fluctuations and diverging dynamic correlations in periodically driven colloidal suspensions
  • Autor: Tjhung, Elsen ; Berthier, Ludovic
  • Assuntos: Colloids ; Condensed Matter ; Correlation ; Density ; Dynamics ; Fluctuation ; Heterogeneity ; Particle trajectories ; Phase transformations ; Physics ; Soft Condensed Matter ; Statistical Mechanics
  • É parte de: Physical review letters, 2015-04, Vol.114 (14), p.148301-148301, Article 148301
  • Notas: ObjectType-Article-1
    SourceType-Scholarly Journals-1
    ObjectType-Feature-2
    content type line 23
  • Descrição: The emergence of particle irreversibility in periodically driven colloidal suspensions has been interpreted as resulting either from a nonequilibrium phase transition to an absorbing state or from the chaotic nature of particle trajectories. Using a simple model of a driven suspension, we show that a nonequilibrium phase transition is accompanied by hyperuniform static density fluctuations in the vicinity of the transition, where we also observe strong dynamic heterogeneities reminiscent of dynamics in glassy materials. We find that single particle dynamics becomes intermittent and strongly non-Fickian, and that collective dynamics becomes spatially correlated over diverging length scales. Our results suggest that the two theoretical scenarii can be experimentally discriminated using particle-resolved measurements of standard static and dynamic observables.
  • Editor: United States: American Physical Society
  • Idioma: Inglês
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  • Realização: ABCD-USP USP   Logos de Redes Sociais: Freepik

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