Abstract
An experimental study of the temperature- () dependent dc conductivity , the electric field () dependence of , and the -dependent thermopower as a function of protonation level () of emeraldine polymer is presented. The conductivity varies from to 10 with increasing protonation, while , with decreasing with increasing . Above a threshold field , , with constant. The thermopower changes sign with increasing and is proportional to for . The transport properties are the first systematic evidence for the formation of a granular polymeric metal.
- Received 5 March 1987
DOI:https://doi.org/10.1103/PhysRevB.36.3475
©1987 American Physical Society