Ac hopping conduction at extreme disorder takes place on the percolating cluster

被引：90

作者：

Schroder, Thomas B. ^{[1
]}

Dyre, Jeppe C. ^{[1
]}

机构：

[1] Roskilde Univ Ctr, Dept Sci, IMFUFA, DNRF Ctr Glass & Time, DK-4000 Roskilde, Denmark

来源：

PHYSICAL REVIEW LETTERS | 2008年 / 101卷 / 02期

关键词：

D O I：

10.1103/PhysRevLett.101.025901

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

Simulations of the random barrier model show that ac currents at extreme disorder are carried almost entirely by the percolating cluster slightly above threshold; thus contributions from isolated low-activation-energy clusters are negligible. The effective medium approximation in conjunction with the Alexander-Orbach conjecture lead to an excellent analytical fit to the universal ac conductivity with no nontrivial fitting parameters.

引用

页数：4

共 55 条

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