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Electron Transport through a Molecular Conductor with Center-of-Mass Motion

K. A. Al-Hassanieh·C. A. Büsser·G. B. Martins·E. Dagotto
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Abstract

The linear conductance of a molecular conductor oscillating between two metallic leads is investigated numerically both for Hubbard interacting and noninteracting electrons. The molecule-leads tunneling barriers depend on the molecule displacement from its equilibrium position. The results present an interesting interference which leads to a conductance dip at the electron-hole symmetry point, that could be experimentally observable. It is shown that this dip is caused by the destructive interference between the purely electronic and phonon-assisted tunneling channels, which are found to carry opposite phases. When an internal vibrational mode is also active, the electron-hole symmetry is broken but a Fano-like interference is still observed.

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K. A. Al-Hassanieh, C. A. Büsser, G. B. Martins, E. Dagotto. 2005-12-20. Electron Transport through a Molecular Conductor with Center-of-Mass Motion. https://doi.org/10.1103/physrevlett.95.256807

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