Abstract
We report the results of transport studies of quasi-one-dimensional (1D) conductors – helical polyacetylene fibers doped with iodine and the data analysis for other polymer single fibers and tubes (diameter = 15–100 nm). We found that at 30 K < T < 300 K the conductance and the current–voltage characteristics follow the power-law: G( T) ∝ T α and I( V) ∝ V β with α = 2.2–7.2 and β = 2–5.7, respectively. Both G( T) and I( V) show some features characteristic of one-dimensional systems such as Luttinger liquid or Wigner crystal. The relationship between our results and theories for tunneling in one-dimensional systems is discussed.
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