Abstract
Magnetic resonance data in undoped trans-(CH)x, including nuclear and electron relaxation times (T1, and T1e), ESR linewidth, and Dynamic Nuclear Polarization are reviewed and analyzed. The results are comprehensively explained in terms of highly one dimensional diffusive spins, the properties of which are consistent with the soliton picture, provided that trapping effects are taken into account. At a given temperature, the population of the spins in the trapped state depends on two parameters : the trap-site concentration and the trapping energy. These parameters are evaluated from the temperature dependence of both the ESR line-width and T1. We also give experimental determination of the diffusion coefficient as a function of temperature and of the soliton extension.
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