Scaling Theory Applied to Far Infrared Absorption by Metal-Insulator Composite Materials
PITTSBURGH UNIV PA DEPT OF PHYSICS AND ASTRONOMY
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Dynamic scaling theory is used to obtain expressions for the far infrared absorption coefficient alpha of metal-insulator granular composite materials near the dc percolation threshold pc in the quasistatic limit. Anomalous frequency dependence is predicted near pc for 50 angstrom radius Au particles. The frequency dependence of alpha obtained from an analysis of published data on Au blacks is inconsistent with the scaling theory for Drude Au particles in the three dimensional limit.
- Laminates and Composite Materials