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Vibron transport in macromolecular chains
We study the hopping mechanism of the vibron excitation transport in the
simple 1D model of biological macromolecular chains. We supposed that the
vibron interaction with thermal oscillations of the macromolecular structural
elements will result in vibron self -trapping, and the formation of the partial
dressed vibron state. With use of the modified Holstein polaron model, we
calculate vibron diffusivity in dependence of the basic system parameters and
temperature. We obtain that the vibron diffusivity smoothly decreases in non
adiabatic limit when the strength of the vibron-phonon coupling grows. However
this dependence becomes by discontinuous one in case of growth of the
adiabaticity of the system. The value of the critical point depends of the
system temperature, and at room temperatures it belongs to the low or
intermediate coupling regime. We discuss an application of these results to
study of vibron transport to 3D bundles of such macromolecules chains
considering it as polymer nanorods and to 2D polymer films organized from such
macromolecules.Comment: 4 pages, 6 figures, contribution to the Proceedings of the Conference
"Physical mesomechanics of multi-level systems`2014", September 3-5 2014,
Tomsk, Russi
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