Effect of dielectric responses on localization in 1D random periodic-on-average systems

Physics – Condensed Matter – Disordered Systems and Neural Networks

Scientific paper

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4 pages, 4 figures, to appear in Phy. Rev. E. Rapid. Communication (2002)

Scientific paper

10.1103/PhysRevE.65.066602

Dielectric response effects on wave localization in random periodic-on-average layered systems (POAS) are studied. Based on Monte Carlo simulations and products of Random Matrices, statistics of the Lyapunovmexponent are determined efficiently for very long systems. A novel oscillatory behavior for the Lyapunov exponent is found and explained for mildly strong scattering conditions. We also show the emergence of strongly localized states in metallic layered systems with intermediate disorder for frequencies above the plasma frequency $\omega_{p}$ of metals, as is not shown in dielectrics. Furthermore, the violation of universal single parameter scaling behaviors in different regimes of multiple scattering is discussed.

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