dorsal/arxiv
View SchemaCharging effects in biased molecular devices
| Authors | Kamil Walczak |
|---|---|
| Categories | |
| ArXiv ID | physics/0405067 |
| URL | https://arxiv.org/abs/physics/0405067 |
| DOI | 10.1016/j.physe.2004.08.102 |
| Journal | Physica E 25 (No.4), pp. 530-534 (2004) |
Abstract
The influence of the charging effects on the transport characteristics of a molecular wire bridging two metallic electrodes in the limit of weak contacts is studied by generalized Breit-Wigner formula. Molecule is modeled as a quantum dot with discrete energy levels, while the coupling to the electrodes is treated within a broad band theory. Owing to this model we find self-consistent occupation of particular energy levels and orbital energies of the wire in the presence of transport. The nonlinear conductance and current-voltage characteristics are investigated as a function of bias voltage in the case of symmetric and asymmetric coupling to the electrodes. It is shown that the shape of that curves are determined by the combined effect of the electronic structure of the molecule and by electron-electron repulsion.
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"abstract": "The influence of the charging effects on the transport characteristics of a\nmolecular wire bridging two metallic electrodes in the limit of weak contacts\nis studied by generalized Breit-Wigner formula. Molecule is modeled as a\nquantum dot with discrete energy levels, while the coupling to the electrodes\nis treated within a broad band theory. Owing to this model we find\nself-consistent occupation of particular energy levels and orbital energies of\nthe wire in the presence of transport. The nonlinear conductance and\ncurrent-voltage characteristics are investigated as a function of bias voltage\nin the case of symmetric and asymmetric coupling to the electrodes. It is shown\nthat the shape of that curves are determined by the combined effect of the\nelectronic structure of the molecule and by electron-electron repulsion.",
"arxiv_id": "physics/0405067",
"authors": [
"Kamil Walczak"
],
"categories": [
"physics.chem-ph"
],
"doi": "10.1016/j.physe.2004.08.102",
"journal_ref": "Physica E 25 (No.4), pp. 530-534 (2004)",
"title": "Charging effects in biased molecular devices",
"url": "https://arxiv.org/abs/physics/0405067"
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