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μSR studies on polyacetylenes |
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| Authors: | K. Ishida K. Nagamine H. Shirakawa |
| Affiliation: | 1. Institute of Physical and Chemical Research (RIKEN), 351, Wako-shi, Saitama, Japan 2. Meson Science Laboratory, Faculty of Science, University of Tokyo, Bunkyo-ku, 113, Tokyo, Japan 3. Institute of Materials Science, University of Tsukuba, Sakura-mura, 305, Ibaraki, Japan |
| Abstract: | Positive muons were injected into both cis- and trans-polyacetylenes. From the various μSR measurements, the μ+ was found to form a radical state with an unpaired electron localized near μ+ in cis-polyacetylene, while in trans-polyacetylene it was found to be in a diamagnetic state. Combined with the observed H?1/2 dependence of the μ+ relaxation rate on the applied longitudinal field H in trans-polyacetylene, it was explained by the formation of soliton in trans-polyacetylene. Also the radical state was found to become unstable in iodine-doped polyacetylenes. An explanation is given with respect to the soliton model. |
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