Breakdown of Diffusion in Dynamics of Extended Waves in Mesoscopic Media

Preprint

13 January 2003

preprint
Published by arXiv in arXiv

https://doi.org/10.48550/arXiv.cond-mat/0211651

Abstract

We report the observation of nonexponential decay of pulsed microwave transmission through quasi-one-dimensional random dielectric media that signals the breakdown of the diffusion model of transport for temporally coherent extended waves. The decay rate of transmission falls nearly linearly in time due to a nearly gaussian distribution of the coupling strengths of quasi-normal electromagnetic modes to free space at the sample surfaces. The peak and width of this distribution scale as L^{-2.05} and L^{-1.81}, respectively.

Keywords

COHERENT EXTENDED
MESOSCOPIC MEDIA
DIELECTRIC MEDIA
PULSED MICROWAVE
EXTENDED WAVES
DIFFUSION
BREAKDOWN
WAVES
DECAY

All Related Versions

Version 1, 2002-11-28, ArXiv
Version 2, 2003-01-13, ArXiv
Published version: Physical Review Letters, 90 (20), 203903.

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