Effects of charge-dependent vibrational frequencies and anharmonicities in transport through molecules
| dc.creator | Koch, Jens | |
| dc.creator | von Oppen, Felix | |
| dc.date | 2005-07-30 | |
| dc.date.accessioned | 2026-07-07T03:06:10Z | |
| dc.date.available | 2026-07-07T03:06:10Z | |
| dc.description | As a step towards a more realistic modeling of vibrations in single-molecule devices, we investigate the effects of charge-dependent vibrational frequencies and anharmonic potentials on electronic transport. For weak phonon relaxation, we find that in both cases vibrational steps split into a multitude of substeps. This effectively leads to a bias-dependent broadening of vibrational features in current-voltage and conductance characteristics, which provides a fingerprint of nonequilibrium vibrations whenever other broadening mechanisms are secondary. In the case of an asymmetric molecule-lead coupling, we observe that frequency differences can also cause negative differential conductance. | |
| dc.description | 4+ pages, 3 figures; accepted for publication in Phys. Rev. B. (Brief Reports) | |
| dc.identifier | https://arxiv.org/abs/cond-mat/0508011 | |
| dc.identifier | http://arxiv.org/abs/cond-mat/0508011 | |
| dc.identifier | Phys. Rev. B 72, 113308 (2005) | |
| dc.identifier | doi:10.1103/PhysRevB.72.113308 | |
| dc.identifier.uri | http://salesiana.dossiersoluciones.com/handle/123456789/26713 | |
| dc.subject | Mesoscale and Nanoscale Physics | |
| dc.title | Effects of charge-dependent vibrational frequencies and anharmonicities in transport through molecules | |
| dc.type | text |