Temperature evolution of electronic and lattice configurations in highly ordered trans-polyacetyleneстатья
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Дата последнего поиска статьи во внешних источниках: 18 июля 2013 г.
Аннотация:We have studied the temperature evolution of the optical absorption and Raman scattering spectra of a trans-cis blend of "soluble" polyacetylene in a polyvinylbutyral/butanol mixture. On decreasing temperature a reversible restructuring of the electronic and lattice systems of trans-(CH)/sub x/ occurs: the electronic energy gap contracts at the high rate of 0.4 meV/K, and the vibrational modes are modified. The experimental data obtained are interpreted in terms of a peculiar interaction of pi -conjugated electrons with lattice fluctuations.