Accession Number:

AD0749300

Title:

Electrical Conductivity in Disordered Systems,

Descriptive Note:

Corporate Author:

MASSACHUSETTS INST OF TECH CAMBRIDGE CENTER FOR MATERIALS SCIENCE AND ENGINEERING

Report Date:

1972-01-01

Pagination or Media Count:

13.0

Abstract:

Results are presented from two- and three-dimensional analog simulations, together with digital solutions, of the bulk conductivity of a heterogeneous lattice as a function of the fraction of conducting nodes, p. The conductivity in three dimensions is proportional to P- P sub C squared over the entire range P sub C orP or1, where P sub C is the percolation threshold. With this result, it is shown that the temperature dependence of electrical conductivity of a disordered system is very similar to the T to the minus 14th power behavior observed over limited temperature ranges, and often ascribed to phonon-assisted hopping. Author

Subject Categories:

  • Solid State Physics

Distribution Statement:

APPROVED FOR PUBLIC RELEASE