Nonuniversal dynamic conductance fluctuations in disordered systems
Abstract
Sample-to-sample fluctuations of the time-dependent conductance of a system with static disorder have been studied by means of diagrammatic theory and microwave pulsed transmission measurements. The fluctuations of time-dependent conductance are not universal, i.e., depend on sample parameters, in contrast to the universal conductance fluctuations in the steady-state regime. The variance of normalized conductance, determined by the infinite-range intensity correlation C_3(t), is found to increase as a third power of delay time from an exciting pulse, t. C_3(t) grows larger than the long-range intensity correlation C_2(t) after a time t_q ~ <g>^{1/2} t_D (t_D being the diffusion time, <g> being the average dimensionless conductance).
Cite
@article{arxiv.0901.3668,
title = {Nonuniversal dynamic conductance fluctuations in disordered systems},
author = {N. Cherroret and A. Pena and A. A. Chabanov and S. E. Skipetrov},
journal= {arXiv preprint arXiv:0901.3668},
year = {2009}
}
Comments
Revised version, 6 pages, 5 figures