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VOLUME 64 | ISSUE 9 | PAGE 613
Temperature evolution of electronic and lattice configurations in highly ordered trans-polyacetylene
We have studied temperature evolution of optical absorption and Raman scattering spectra of trans-cis blend of 'soluble' polyacetylene in polyvinylbutyral/butanol mixture. With temperature decrease the reversible reconstruction of electronic and lattice system of trans-(CH)a; occurs: the electronic energy gap contracts with high mobility of 0.4 meV/K and the vibrational modes are modified. The experimental data obtained are interpreted in terms of peculiar interaction of 7r-conjugated electrons with lattice fluctuations. PACS: 71.20.Rv, 78.30.Jw, 78.40.Me, 78.66.Qn