%0 Journal Article
%T Multipeak Negative Differential Resistance from Interplay between Nonlinear Stark Effect and Double-Branch Current Flow
%A Mikolaj Sadek
%A Malgorzata Wierzbowska
%A Michal F. Rode
%A Andrzej L. Sobolewski
%J Physics
%D 2014
%I arXiv
%R 10.1039/C4RA10720A
%X Multipeak negative differential resistance (NDR) molecular devices are designed from first principles. The effect of NDR is associated with the non-linear Stark shifts and the electron localization within the conductive region and contacts. Deep I(V)-curve well is formed when the aromatic molecule, containing intramolecular hydrogen bond, is connected to each lead by the double-branch contacts. This effect occurs at the same voltage where a single-junction case exhibits only a flat step in the current characteristics. The multipeak oscillations arise from the mutual effect of the Stark shifts located at the electron-rich contacts and parts of the molecule - this opens the route for further tailoring the desired properties.
%U http://arxiv.org/abs/1409.3090v2