Phenomenological equations for the electrical conductivity of microscopically inhomogeneous materials (original) (raw)

Division of Engineering and Applied Physics and Department of Physics, Harvard University, Cambridge, Massachusetts 02138
*Present address: IBM Research Laboratory, Yorktown Heights, N.Y. 10598.

Phys. Rev. B 13, 3261 – Published 15 April, 1976

DOI: https://doi.org/10.1103/PhysRevB.13.3261

Abstract

Phenomenological equations for the electrical conductivity of microscopically inhomogeneous materials are proposed. These equations combine ideas from the effective-medium theory and from percolation theory and, for some interesting cases, improve on the effective-medium theory in the vicinity of the percolation threshold. The equations are compared, without adjustable parameters, to three different experimental situations and agree with data remarkably well.

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Phys. Rev. B 13, 3261– Published 15 April, 1976

Received 18 August 1975

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Phys. Rev. B 13, 3261– Published 15 April, 1976

Received 18 August 1975