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- W2028497095 abstract "Second mechanism for diffusive motion of a soliton in trans-polyacetylene is investigated in Takayama Lin-Liu and Maki's model. It is induced by momentum transfer with thermally excited phonons, which dissipates by friction. By applying Mori's formula to the equation of motion of the solitons, the friction and diffusion constant are calculated, using classical statistics. The friction depends linearly on temperature in the low temperature region. According to the Einstein relation, the diffusion constant becomes temperature independent. Relation between the present mechanism and random walk mechanism, previously studied, is also clarified. When the frequency is not zero (or in the finite time regime), the two mechanisms are working and the dynamical diffusion constant, D (ω), becomes proportional to T 2 . Possible importance of acoustic phonons is pointed out in polyacetylene." @default.
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- W2028497095 date "1987-09-01" @default.
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- W2028497095 title "Brownian Motion of a Soliton in Trans-Polyacetylene. II. Friction Mechanism" @default.
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- W2028497095 doi "https://doi.org/10.1143/jpsj.56.3220" @default.
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