Violation of the fluctuation-dissipation relation during the formation of a colloidal glass

Ludovic Bellon 1 Sergio Ciliberto 1 Claude Laroche 1
1 Phys-ENS - Laboratoire de Physique de l'ENS Lyon
Abstract : The relationship between the conductivity and the polarization noise is measured in a colloidal glass as a function of frequency in the range 1 Hz-40 Hz. It is found that at the beginning of the transition from a fluid-like sol to a solid-like colloidal glass the fluctuation-dissipation relation is strongly violated. The amplitude and the persistence time of this violation are decreasing functions of frequency. At the lowest frequencies of the measuring range it persists for times which are about 5% of the time needed to form the colloidal glass. This phenomenology is quite close to the recent theoretical predictions done for the violation of the fluctuation-dissipation relation in glassy systems.
Keywords : Fluctuation-Dissipation-Theorem violation FDT violation Laponite polarization noise effective temperature
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Journal articles
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https://hal-ens-lyon.archives-ouvertes.fr/ensl-00179723
Contributor : Ludovic Bellon <>
Submitted on : Tuesday, October 16, 2007 - 2:49:46 PM
Last modification on : Thursday, April 19, 2018 - 2:54:03 PM

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Ludovic Bellon, Sergio Ciliberto, Claude Laroche. Violation of the fluctuation-dissipation relation during the formation of a colloidal glass. EPL - Europhysics Letters, European Physical Society/EDP Sciences/Società Italiana di Fisica/IOP Publishing, 2001, pp.511-517. ⟨10.1209/epl/i2001-00182-9⟩. ⟨ensl-00179723⟩

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