Physics – Condensed Matter – Mesoscale and Nanoscale Physics
Scientific paper
2005-10-05
Physics
Condensed Matter
Mesoscale and Nanoscale Physics
5 pages, 4 figures (accepted for publication in Physical Review B)
Scientific paper
10.1103/PhysRevB.72.193410
We have studied the transport properties of a molecular device composed of donor and acceptor moieties between two electrodes on either side. The device is considered to be one-dimensional with different on-site energies and the non-equilibrium properties are calculated using Landauer's formalism. The current-voltage characteristics is found to be asymmetric with a sharp Negative Differential Resistance at a critical bias on one side and very small current on the other side. The NDR arises primarily due to the bias driven electronic structure change from one kind of insulating phase to another through a highly delocalized conducting phase. Our model can be considered to be the simplest to explain the experimental current-voltage characteristics observed in many molecular devices.
Lakshmi Sankaran
Pati Swapan K.
No associations
LandOfFree
Current-voltage characteristics in donor-acceptor systems: Implications of a spatially varying electric field 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 Current-voltage characteristics in donor-acceptor systems: Implications of a spatially varying electric field, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Current-voltage characteristics in donor-acceptor systems: Implications of a spatially varying electric field will most certainly appreciate the feedback.
Profile ID: LFWR-SCP-O-250541