Long-Range Electron Transport Donor-Acceptor in Nonlinear Lattices


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Chetverikov, Alexander and Ebeling, Werner and Velarde, Manuel G. (2016) Long-Range Electron Transport Donor-Acceptor in Nonlinear Lattices. Entropy, 18 (3). p. 92. ISSN 1099-4300

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Official URL: https://doi.org/10.3390/e18030092


We study here several simple models of the electron transfer (ET) in a one-dimensional nonlinear lattice between a donor and an acceptor and propose a new fast mechanism of electron surfing on soliton-like excitations along the lattice. The nonlinear lattice is modeled as a classical one-dimensional Morse chain and the dynamics of the electrons are considered in the tight-binding approximation. This model is applied to the processes along a covalent bridge connecting donors and acceptors. First, it is shown that the electron forms bound states with the solitonic excitations in the lattice. These so-called solectrons may move with supersonic speed. In a heated system, the electron transfer between a donor and an acceptor is modeled as a diffusion-like process. We study in detail the role of thermal factors on the electron transfer. Then, we develop a simple model based on the classical Smoluchowski–Chandrasekhar picture of diffusion-controlled reactions as stochastic processes with emitters and absorbers. Acceptors are modeled by an absorbing boundary. Finally, we compare the new ET mechanisms described here with known ET data. We conclude that electron surfing on solitons could be a special fast way for ET over quite long distances.

Item Type:Article
Uncontrolled Keywords:Electron transport; electron-surfing; donor-acceptor; thermal solitons; solectrons
Subjects:Sciences > Physics
Sciences > Physics > Particles
ID Code:62430
Deposited On:07 Oct 2020 10:19
Last Modified:07 Oct 2020 10:19

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