Variable-range hopping conductivity in granular materials

O. Entin-Wohlman, Y. Gefen, Y. Shapira

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83 Scopus citations

Abstract

The temperature dependence of the conductivity of high-resistivity granular systems is analysed in terms of the Efros-Shklovskii theory (1975), which focuses on the role of the Coulomb gap. The divergence of the static dielectric constant near the metal-insulator transition is found to be manifested by experimental data. The possibility that granular samples will show a crossover between the behaviour predicted by Efros and Shklovskii and the Mott variable-range hopping law is discussed.

Original languageEnglish
Article number004
Pages (from-to)1161-1167
Number of pages7
JournalJournal of Physics C: Solid State Physics
Volume16
Issue number7
DOIs
StatePublished - 1 Dec 1983
Externally publishedYes

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