Conduction in non-crystalline systems IX. the minimum metallic conductivity

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Abstract
The minimum metallic conductivity in disordered materials, proposed by the author in previous papers, is evaluated in the light of the revised criterion for Anderson localization given by Edwards and Thouless (1972). The experimental evidence resulting from the recent work of Allen and Adkins (1972) is reviewed, as is also the discussion by Cohen (1971) and Eggarter (1972) based on percolation theory. This and other evidence suggests strongly that a minimum metallic conductivity does exist having approximately the calculated value.