Effects of magnetic order on charge transport in conducting polymers

Pekka Kuivalainen, Henrik Stubb, Heikki Isotalo, Klaus Lindberg

Research output: Contribution to journalArticleScientific

1 Citation (Scopus)

Abstract

We have studied the effect of charge carrier spin-magnetic ion interactions on charge transport in inhomogeneous polymers where the highly-conducting regions of the material order magnetically. This is the case for example in heavily FeCl3-doped (CH)x or in polymer composites consisting of a magnetic metal or a magnetic semiconductor embedded in an insulating polymer. Our calculated results show that when the conduction is dominated by thin potential barriers as in the fluctuation-induced tunnelling mechanism, the changes in magnetic order due to temperature or magnetic field cause large changes in resistivity. The possibility that the present mechanism can explain the measured positive magnetoresistance in FeCl3-doped (CH)x is discussed.
Original languageEnglish
Pages (from-to)109-116
JournalSynthetic Metals
Volume21
Issue number1-3
DOIs
Publication statusPublished - 1987
MoE publication typeB1 Article in a scientific magazine
EventConference on Electronic Processes in Conducting Polymers - Vadstena, Sweden
Duration: 18 Aug 198620 Aug 1986

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