Enhancement of High-Frequency Field in Near-Ideal Metal Mixture

TL;DR

This paper investigates how near-ideal metal mixtures can exhibit enhanced high-frequency electric fields and giant fluctuations, even without local absorption, especially near the percolation threshold.

Contribution

It demonstrates that 2D two-component systems can have effective absorption without local losses and explains giant field fluctuations in granular films.

Findings

Effective absorption can occur without local losses in 2D systems.

Electric field moments diverge as local absorption decreases.

Giant field fluctuations are observed near the percolation threshold.

Abstract

The a.c. electric field distribution is studied in a composite, containing materials with small local losses. The possibility that 2D two-component system can have effective absorption in the absence of local absorption was evidented. We study the second and higher moments of electric field and show that they diverge with the decrease of local absorption. The 3D system near the percolation threshold is also discussed. The observation of giant field fluctuations in granular films is explained.