New aspects of polaron dynamics in electric field

Tatiana Astakhova () and George Vinogradov
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Tatiana Astakhova: Emanuel Institute of Biochemical Physics RAS
George Vinogradov: Emanuel Institute of Biochemical Physics RAS

The European Physical Journal B: Condensed Matter and Complex Systems, 2019, vol. 92, issue 11, 1-9

Abstract: Abstract The dynamics of a polaron in polyacetylene (PA) in an electric field is studied in detail. It is shown that the dependence of polaron velocity on the applied field is determined by the vibrational spectrum of PA. A polaron moving in an electric field with a supersonic velocity generates monochromatic oscillations of the optical branch of the PA vibrational spectrum. The polaron velocity is equal to the phase velocity of these oscillations. Parameters of a moving polaron and an excited mode are determined by the balance between the energy gained by the polaron in the electric field and the energy dissipated into the lattice. The Basco’s algorithm [D.M. Basko, E.M. Conwell, Phys. Rev. Lett. 88, 056401 (2002)] developed earlier for the single-electron model is also applied for the model under consideration. Graphical abstract

Keywords: Mesoscopic; and; Nanoscale; Systems (search for similar items in EconPapers)
Date: 2019
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DOI: 10.1140/epjb/e2019-100339-y

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