Conductivity and magnetoresistance of polyacetylene fiber network

G. T. Kim, M. Burghard, D. S. Suh, K. Liu, J. G. Park, S. Roth, Y. W. Park

Research output: Contribution to journalArticlepeer-review

26 Citations (Scopus)

Abstract

The four-probe conductivity and magnetoresistance (MR) in micron-scale for the iodine-doped polyacetylene (PA) fiber network were measured. A remarkably weaker temperature dependence of resistivity compared to that of the bulk PA film was observed. The transverse MR at T = 1.5 K was negative and its relative magnitude was approximately 0.1% at H = 10 T. The slow oscillatory tendency with small amplitude was suggested in MR. The results suggest the importance of contact barriers in the nanosize PA fiber network.

Original languageEnglish
Pages (from-to)207-210
Number of pages4
JournalSynthetic Metals
Volume105
Issue number3
DOIs
Publication statusPublished - 1999 Sept 15
Externally publishedYes

Bibliographical note

Funding Information:
We would specially give our gratitudes to M. Riek, M. Schmidt, J.H. Smet, A. Christian, F. Zha, J. Muster, B. Steffi, K. Vojislav at MPI, Stuttgart, for valuable discussions and furnishing their facilities. A portion of this work was performed at the National High Magnetic Field Laboratory, which is supported by NSF Cooperative Agreement No. DMR-9527035 and by the State of Florida. One of the authors (YWP) appreciates Prof. J.R. Schrieffer for his kind arrangement to work at the NHMFL. This work was supported by STEPI under the contract no. 98-I-01-04-A-026, Ministry of Science and Technology (MOST), Korea.

ASJC Scopus subject areas

  • Electronic, Optical and Magnetic Materials
  • Condensed Matter Physics
  • Mechanics of Materials
  • Mechanical Engineering
  • Metals and Alloys
  • Materials Chemistry

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