INHOMOGENEOUS DISORDER AND THE MODIFIED DRUDE METALLIC STATE OF CONDUCTING POLYMERS
INHOMOGENEOUS DISORDER AND THE MODIFIED DRUDE METALLIC STATE OF CONDUCTING POLYMERS
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DOI：
10.1016/0379-6779(94)90176-7
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发表时间：
1994-08-01
期刊：
影响因子：
4.4
通讯作者：
POUGET, JP
中科院分区：
文献类型：
--
作者：
EPSTEIN, AJ;JOO, J;POUGET, JP
金属态的非常高的导电掺杂聚合物，如聚乙炔，聚吡咯和聚苯胺，显示出有显着的相似性。虽然这些掺杂聚合物中的每一种具有不同的温度依赖性电导率，但这些掺杂聚合物系统中的每一种在费米能级处具有类似的类金属、泡利磁化率和态密度。此外，这些高导电系统中的每一个都显示出作为从微波状态（10（9）Hz）到“全导电电子等离子体频率”（1至3eV，取决于聚合物）的频率的函数的通用电子响应（介电常数和电导率）。这种共同的行为，尽管明显的差异，在温度依赖性的电导率被认为是在这些材料中的不均匀的晶体顺序的结果，导致三维金属域或岛（晶体相干区域），由不良的传导弱链接（无序区域和纤维间的链接）分开。
The metallic state of the very highly conducting doped polymers, such as polyacetylene, polypyrrole and polyaniline, is shown to have remarkable similarities. Though each of these doped polymers has a different temperature-dependent conductivity, each of these doped polymer systems has a similar metal-like, Pauli susceptibility and density of states at the Fermi level. Also, each of these highly conducting systems displays a universal electronic response (dielectric constant and conductivity) as a function of frequency from the microwave regime (10(9) Hz) through to the 'all conduction electron plasma frequency' (1 to 3 eV, depending on the polymer). This common behavior despite apparent differences in the temperature-dependent conductivities is proposed to be a consequence of the inhomogeneous crystalline order in these materials, leading to three-dimensional metallic domains or islands (crystallographically coherent regions), separated by poorly conducting weak links (disordered regions and interfiber links).