Longitudinal and transversal piezoresistive response of granular metals
Disordered Systems and Neural Networks
2009-11-07 v1
Abstract
In this paper, we study the piezoresistive response and its anisotropy for a bond percolation model of granular metals. Both effective medium results and numerical Monte Carlo calculations of finite simple cubic networks show that the piezoresistive anisotropy is a strongly dependent function of bond probability p and of bond conductance distribution width \Delta g. We find that piezoresistive anisotropy is strongly suppressed as p is reduced and/or \Delta g is enhanced and that it vanishes at the percolation thresold p=p_c. We argue that a measurement of the piezoresistive anisotropy could be a sensitive tool to estimate critical metallic concentrations in real granular metals.
Cite
@article{arxiv.cond-mat/0103035,
title = {Longitudinal and transversal piezoresistive response of granular metals},
author = {C. Grimaldi and P. Ryser and S. Straessler},
journal= {arXiv preprint arXiv:cond-mat/0103035},
year = {2009}
}
Comments
14 pages, 7 eps figures