A vast class of disordered conducting-insulating compounds close to the percolation threshold is characterized by nonuniversal values of transport critical exponent t, in disagreement with the standard theory of percolation which predicts t
Title
Tunneling-percolation origin of nonuniversality: Theory and experiments
Published in
Physical Review B
Volume
71
Issue
6
Pages
064201
Date
2005
Note
Article assez complet: théorie + expériences (verre+RuO2). Théorie: - modèle: percolation + effet tunnel entre particules - simulations Monte Carlo - développement de la piézorésistivité : G(hydrostatique), G(parallèle) et G(perpendiculaire); Gh=Gpar+2Gperp Résultats: sur V6 & RuO2, cuits entre 525 et 600°C.
Record creation date
2006-06-27