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Longitudinal muon spin relaxation in the organic metal polypyrrole |
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| Authors: | F. L. Pratt G. R. Mitchell S. F. J. Cox C. A. Scott W. Hayes |
| Affiliation: | (1) Clarendon Laboratory, Parks Road, OXI 3PU Oxford, U.K.;(2) J. J. Thomson Physical Laboratory, University of Reading, Whiteknights, RG6 2AF Reading, U.K.;(3) Rutherford Appleton Laboratory, OX11 0QX Chilton, Oxfordshire, U.K. |
| Abstract: | Longitudinal and zero field measurements of the muon spin relaxation function are reported for muons implanted in the conducting polymer polypyrrole. The observed muon relaxation can be accounted for by interaction with polaron excitations in the conducting polymer. Evidence is found for polaron localisation at temperatures below ∼ 50 K. The temperature dependence of the polaron mobility derived from the muon data is consistent with direct electrical conductivity measurements. |
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