THE SOLITON STATE OF HEAVILY-DOPED POLYACETYLENE

We propose that the heavily doped polyacetylene is formed by the solit on-antisoliton pair condensation which is a mixed state of the delocal ized charge carriers and the virtually bound states. With this proposa l, the metallic conductivity and the temperature independent magnetic susceptibility as well as the infrared active vibrational modes (IRAV) observed in the heavily doped polyacetylene can be understood simulta neously. Furthermore, the persistence of the C=C and C-C vibrational m odes appeared in Raman spectra for the heavily doped polyacetylene can also be understood with this soliton-antisoliton condensed state mode l. The highest conductivity estimated from this phenomenological model is sigma(RT) congruent-to 35,000 S/cm, consistent with the observed ( and confirmed) maximum conductivity of the heavily doped polyacetylene .