Quantum Transport through Organic Molecules

Details Quantum Transport through Organic Molecules Quantum Transport through Organic Molecules

2009-12-21

arxiv.org/abs/0912.4147v2

Chemical Physics, Volume 331, Issues 2-3, 8 January 2007, Pages 254-260 [Erratum: Chemical Physics, Volume 345, Issue 1, 3 Apr

Physics

Condensed Matter

Mesoscale and Nanoscale Physics

11 pages, 8 figures

Scientific paper

10.1016/j.chemphys.2006.10.013

We explore electron transport properties for the model of benzene-1, 4-dithiolate (BDT) molecule and for some other geometric models of benzene molecule attached to two semi-infinite one-dimensional metallic electrodes using the Green's function formalism. An analytic approach, based on a simple tight-binding framework, is presented to describe electron transport through the molecular wires. Electronic transport in such molecular systems is strongly affected by the geometry of the molecules as well as their coupling to the side-attached electrodes. Conductance reveals resonant peaks associated with the molecular energy eigenstates providing several complex spectra. Current passing through the molecules shows staircase-like behavior with sharp steps in the weak molecule-to-electrode coupling limit, while it varies quite continuously with the applied bias voltage in the limit of strong molecular coupling. In the presence of transverse magnetic field, conductance exhibits oscillatory behavior with flux $\phi$, threaded by the molecular ring, showing $\phi_0$ ($=ch/e$) flux-quantum periodicity. Though, conductance changes in the presence of transverse magnetic field, but the current-voltage characteristics are not significantly affected by this field.

Affiliated with

Also associated with

No associations

Rating

Quantum Transport through Organic Molecules does not yet have a rating. At this time, there are no reviews or comments for this scientific paper.

If you have personal experience with Quantum Transport through Organic Molecules, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Quantum Transport through Organic Molecules will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFWR-SCP-O-302369