Quantum transport in AuCl3 doped polyacetylene studied by ESR

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

Research output: Contribution to journalArticlepeer-review

1 Scopus citations


Starting with a review of general principles of transport processes in polyacetylene (PA) which can be studied by electron spin resonance (ESR) new results on highly doped PA are presented. The AuCl3 doped PA samples stored under vacuum at room temperature in ESR sample tubes reach a steady state in the temperature dependent intensity and linewidth behavior after three to four month storage. 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 shows a maximum of ΔB = 0.30 mT at 30 K, and it is constant at ΔB = 0.17 mT above this temperature in the whole temperature region between 70 and 300 K. The ESR data are discussed in a two spin model of delocalized states at the PA chain and fixed spins near the dopants. Broadening and motional narrowing influence the ESR linewidth. The interpretation points to the metallic behavior of the highly doped PA at low temperatures.

Original languageEnglish
Pages (from-to)21-25
Number of pages5
JournalSynthetic Metals
Issue number1-3
StatePublished - 15 Feb 2001

Bibliographical note

Funding Information:
Partial support of this work was done by KISTEP under the contract No. 98-1-01-04-A-026, Ministry of Science and Technology (MOST), Korea. The experimental help of Brunhild Schandert and Frank Ziegs is grateful acknowledged.


Dive into the research topics of 'Quantum transport in AuCl3 doped polyacetylene studied by ESR'. Together they form a unique fingerprint.

Cite this