Electron Transport through a Molecular Conductor with Center-of-Mass Motion
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.
Cite
@article{arxiv.cond-mat/0504528,
title = {Electron Transport through a Molecular Conductor with Center-of-Mass Motion},
author = {K. A. Al-Hassanieh and C. A. Büsser and G. B. Martins and E. Dagotto},
journal= {arXiv preprint arXiv:cond-mat/0504528},
year = {2009}
}