Nonlinear DC-response in Composites: a Percolative Study
Abstract
The DC-response, namely the - and - charateristics, of a variety of composite materials are in general found to be nonlinear. We attempt to understand the generic nature of the response charactersistics and study the peculiarities associated with them. Our approach is based on a simple and minimal model bond percolative network. We do simulate the resistor network with appropritate linear and nonlinear bonds and obtain macroscopic nonlinear response characteristics. We discuss the associated physics. An effective medium approximation (EMA) of the corresponding resistor network is also given.
Cite
@article{arxiv.cond-mat/9707125,
title = {Nonlinear DC-response in Composites: a Percolative Study},
author = {Abhijit Kar Gupta and Asok K. Sen},
journal= {arXiv preprint arXiv:cond-mat/9707125},
year = {2009}
}
Comments
Text written in RevTEX, 15 pages (20 postscript figures included), submitted to Phys. Rev. E. Some minor corrections made in the text, corrected one reference, the format changed (from 32 pages preprint to 15 pages)