ESR studies of AuCl3 doped polyacetylene: metallic behaviour at low temperatures

A. Bartl, L. Dunsch, E. S. Choi, D. S. Suh, Y. W. Park

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Doped polyacetylene (PA) samples stored under vacuum at room temperature in ESR sample tubes reach after three months nearly a steady state in the temperature dependent intensity and linewidth behaviour. The ESR spectra show two lines with an equal g-factor. In particular the linewidth of the small line demonstrates a remarkable property. The temperature dependence of the linewidth indicates a maximum at 30 K, and has a value of about 0.17 mT above this temperature in the whole investigated region up to 300 K. The ESR data are discussed in a two spin model of delocalized states at the PA chain and fixed spins in the dopants. The interpretation underlines the metallic behaviour of the doped PA at low temperatures.

Original languageEnglish
Pages (from-to)465-466
Number of pages2
JournalSynthetic Metals
Issue number1
StatePublished - May 1999
EventProceedings of the 1998 International Conference on Science and Technology of Synthetic Metals (ICSM-98) - Montpellier
Duration: 12 Jul 199818 Jul 1998

Bibliographical note

Funding Information:
This work was supportedb y the Korea Science and Engineering Foundation (KOSEF) and the Ministry of Education (MOE), Korea. The experimental help of R. Schandert is greatful acknowledged.


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