Physics – Condensed Matter – Soft Condensed Matter
Scientific paper
1997-07-11
Physics
Condensed Matter
Soft Condensed Matter
Text written in RevTEX, 15 pages (20 postscript figures included), submitted to Phys. Rev. E. Some minor corrections made in t
Scientific paper
10.1103/PhysRevB.57.3375
The DC-response, namely the $I$-$V$ and $G$-$V$ 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.
Gupta Abhijit Kar
Sen Asok K.
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