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Regular version of the site

Article

Charge transfer mechanism in nonstationary granular systems

Physical Review B: Condensed Matter and Materials Physics. 2015. Vol. 92. P. 224203-1-224203-16.
Ioselevich A., Sivak V.

We consider a nonstationary array of conductors, connected by resistances that fluctuate with time. The charge transfer between a particular pair of conductors is supposed to be dominated by electrical breakdowns—the moments when the corresponding resistance is close to zero. An amount of charge, transferred during a particular breakdown, is controlled by the condition of minimum for the electrostatic energy of the system. We find the conductivity, relaxation rate, and fluctuations for such a system within the classical approximation, valid, if the typical transferred charge is large compared to e  . We discuss possible realizations of the model for colloidal systems and arrays of polymer-linked grains.