STUDY OF SPIN DYNAMICS AND ELECTRONIC-STRUCTURE IN POLYTHIOPHENE HEAVILY-DOPED WITH CLO4-

ESR line width was measured in polythiophene heavily doped with ClO4- as functions of both temperature and frequency. We studied the dynamic s of charge carrier with spin. The temperature dependence was explaine d by the Elliott mechanism, indicating the existence of metallic elect rons. The frequency dependence demonstrated that electron spins are in the state of diffusive motion in quasi-one-dimension. These experimen tal results were interpreted in a consistent way, yielding the paramet ers characteristic of the electronic structure like effective mass and mean free path.