SCALING THEORY APPLIED TO FAR-INFRARED ABSORPTION BY METAL-INSULATOR COMPOSITE-MATERIALS

被引：5

作者：

DEVATY, RP

机构：

来源：

PHYSICAL REVIEW B | 1991年 / 44卷 / 02期

关键词：

PERCOLATION-THRESHOLD; PARTICLE COMPOSITES; SUPERCONDUCTING DIAMAGNETISM; DIELECTRIC-CONSTANT; OPTICAL-ABSORPTION; RESISTOR NETWORKS; CRITICAL BEHAVIOR; GOLD-FILMS; TRANSMITTANCE; CONDUCTIVITY;

D O I：

10.1103/PhysRevB.44.593

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

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 p(c) in the quasistatic limit. An anomalous frequency dependence is predicted near p(c) 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, and the theoretical estimate of the magnitude of alpha at approximately-omega = 100 cm-1 is a factor of 7 too large.

引用

页码：593 / 596

页数：4

共 46 条

[1]

[Anonymous], 1994, Introduction to Percolation Theory

[2]

Ashcroft N W., 1976, Solid State Physics, P86

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