Drude metallic response of polypyrrole

R. S. Kohlman, J. Joo, Y. Z. Wang, J. P. Pouget, H. Kaneko, T. Ishiguro, A. J. Epstein

Research output: Contribution to journalArticlepeer-review

137 Citations (Scopus)


The very highly conducting state of polypyrrole is investigated. A Drude metallic response, similar to the behavior of usual metals, is determined, based on the coincidence of dc and microwave conductivities, measurement of a huge and negative microwave dielectric constant, and the optical determination of an unusual plasma frequency in the far ir. Only a fraction of the conduction electrons participate in the Drude behavior. The real part of the dielectric function shows a second plasma frequency in the near ir, attributed to the remaining conduction electrons, confined due to a lack of homogeneous, three-dimensional order.

Original languageEnglish
Pages (from-to)773-776
Number of pages4
JournalPhysical review letters
Issue number5
Publication statusPublished - 1995
Externally publishedYes

ASJC Scopus subject areas

  • General Physics and Astronomy


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