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On the Conduction Mechanism in Granular Materials

On the Conduction Mechanism in Granular Materials PDF Author: I. P. Zvyagin
Publisher:
ISBN:
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Languages : en
Pages : 4

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Book Description
We discuss the effect of virtual intermediate localized states on inter-grain tunneling that controls conduction in granular conductors on the insulating side of the metal-insulator transition. It is shown that intermediate states can substantially increase inter-grain tunneling transition probabilities and give rise to the conductivity temperature dependence of the form ln(sigma) ^ -(T(0)/T), where x approximately equal 0.4, and to a large enhancement of the conductivity.