Localization and Interaction Effects in Metallic Polyacetylene
- 1 January 1987
- journal article
- Published by IOP Publishing in Japanese Journal of Applied Physics
- Vol. 26 (S3-1)
- https://doi.org/10.7567/jjaps.26s3.713
Abstract
The electrical conductivity σ(T) of heavily iodine-doped films of polyacetylene (CHIy)x, y≃0.25-0.3, has been investigated in the temperature range T = 20 mK -295 K and in magnetic fields up to 6T. We find that σ(T)=σ(0)+σ1(T), where σ(0)≃0-30 (Ωcm)-1 and σ(T)≃C√T below 150 K. The slopes C are close to the quasi-universal value of 6 (Ωcm)-1K1/2 reported for a variety of disordered metals. The observed magnetoresistance can be semi-quantitatively related to contributions from three-dimensional localization and electron-electron interaction effects. First results on (CHK0.12)x also reveal a √T dependence of σ1(T).Keywords
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