Ac hopping conduction at extreme disorder takes place on the percolating cluster
Disordered Systems and Neural Networks
2016-08-14 v4
Abstract
Simulations of the random barrier model show that ac currents at extreme disorder are carried almost entirely by the percolating cluster slightly above threshold; thus contradicting traditional theories contributions from isolated low-activation-energy clusters are negligible. The effective medium approximation in conjunction with the Alexander-Orbach conjecture leads to an excellent analytical fit to the universal ac conductivity with no nontrivial fitting parameters.
Keywords
Cite
@article{arxiv.0801.0531,
title = {Ac hopping conduction at extreme disorder takes place on the percolating cluster},
author = {Thomas B. Schrøder and Jeppe C. Dyre},
journal= {arXiv preprint arXiv:0801.0531},
year = {2016}
}