TY - JOUR
T1 - Electrical transport properties near a classical conductivity or percolation threshold
AU - Bergman, David J.
N1 - Funding Information:
This review was written while the author was a Distinguished Visiting Professor at the Graduate School of The Ohio State University. The research describedh ere was supportedi n part by NSF Grant No. DMR84-14257a nd by the US-Israel Binational Science Foundation under Grant No. 354/85.
PY - 1989/5/1
Y1 - 1989/5/1
N2 - This review emphasizes progress in understanding electrical conduction and related physical properties of a composite medium near a classical conductivity threshold - mostly but not entirely in the context of a percolation threshold. Besides dc conductivity, we discuss the dielectric susceptibility in a metal-dielectric composite, Hall effect and magnetoresistance in a good conductor - bad conductor mixture, conductivity fluctuations (flicker noise) in such a composite, and weakly nonlinear behavior in a composite dielectric. Scaling theories are described for the dielectric properties and for the magnetotransport near a percolation threshold. Because the conductivity fluctuations and weak nonlinearities are sensitive to microgeometric features that do no affect the linear conductivity, measuring them can provide new information about the microstructure.
AB - This review emphasizes progress in understanding electrical conduction and related physical properties of a composite medium near a classical conductivity threshold - mostly but not entirely in the context of a percolation threshold. Besides dc conductivity, we discuss the dielectric susceptibility in a metal-dielectric composite, Hall effect and magnetoresistance in a good conductor - bad conductor mixture, conductivity fluctuations (flicker noise) in such a composite, and weakly nonlinear behavior in a composite dielectric. Scaling theories are described for the dielectric properties and for the magnetotransport near a percolation threshold. Because the conductivity fluctuations and weak nonlinearities are sensitive to microgeometric features that do no affect the linear conductivity, measuring them can provide new information about the microstructure.
UR - http://www.scopus.com/inward/record.url?scp=0342918124&partnerID=8YFLogxK
U2 - 10.1016/0378-4371(89)90281-1
DO - 10.1016/0378-4371(89)90281-1
M3 - מאמר
AN - SCOPUS:0342918124
VL - 157
SP - 72
EP - 88
JO - Physica A: Statistical Mechanics and its Applications
JF - Physica A: Statistical Mechanics and its Applications
SN - 0378-4371
IS - 1
ER -