非稳态颗粒系统和人工阵列中的“蠕变电导”
"Creeping conductance" in nonstationary granular systems and artificial arrays
摘要：
我们考虑一个非稳态阵列的导体，连接的电阻随时间波动。一对特定导体之间的电荷转移被认为是由“电击穿”所主导的--当相应的电阻接近于零的时候。在特定击穿期间转移的电荷量由系统的静电能量的最小值条件控制。我们发现电导率，弛豫速率，和波动的“经典近似”，有效的，如果典型的转移电荷是大相比，$e$这样的系统。我们讨论了可能实现的胶体系统和阵列的聚合物连接颗粒的模型。
英文摘要：
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.
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