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We study one-electron tunneling through atomic-scale one-dimensional wires inthe presence of coherent electron-phonon (e-ph) coupling. We use a full quantummodel for the e-ph interaction within the wire with open boundary conditions.We illustrate the mechanisms of transport in the context of molecular wiressubject to boundary conditions imposing the presence of a soliton defect in themolecule. Competition between polarons and solitons in the coherent transportis examined. The transport mechanisms proposed are generally applicable toother one-dimensional nanoscale systems with strong e-ph coupling.Comment: 7 pages, 4 figures, accepted for publication in Europhys. Let

Mechanisms for electron transport in atomic-scale one-dimensional wires: Soliton and polaron effects