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Universal Scaling in Highly Doped Conducting Polymer Films

By A.J. Kronemeijer, E.H. Huisman, I. Katsouras, P.A. van Hal, T.C.T. Geuns, P.W.M. Blom, S.J. van der Molen and D.M. de Leeuw


Electrical transport of a highly doped disordered conducting polymer, viz. poly-3,4-ethylenedioxythiophene stabilized with poly-4-styrenesulphonic acid, is investigated as a function of bias and temperature. The transport shows universal power-law scaling with both bias and temperature. All measurements constitute a single universal curve, and the complete J(V, T) characteristics are described by a single equation. We relate this scaling to dissipative tunneling processes, such as Coulomb blockade.

Year: 2010
DOI identifier: 10.1103/physrevlett.105.156604
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