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arXiv · 0901.3668

Nonuniversal dynamic conductance fluctuations in disordered systems

N. Cherroret·A. Pena·A. A. Chabanov·S. E. Skipetrov
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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 ~ ^{1/2} t_D (t_D being the diffusion time, being the average dimensionless conductance).

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N. Cherroret, A. Pena, A. A. Chabanov, S. E. Skipetrov. 2009-07-03. Nonuniversal dynamic conductance fluctuations in disordered systems. https://doi.org/10.1103/physrevb.80.045118

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