A minimalistic diode
1 Institute for Theoretical Condensed Matter physics, Karlsruhe Institute of Technology 76128 Karlsruhe, Germany
2 Institute of Nanotechnology - Hermann-von-Helmholtz-Platz 1, 76344 Eggenstein- Leopoldshafen, Germany
Received: 26 May 2014
Accepted: 6 August 2014
In this work we present a minimalistic model sufficient for current asymmetries in molecules. In particular, we search for an interaction on the molecule which causes current asymmetries independent of additional assumptions or the precise form of its environment. To this end we first discuss earlier proposals and clarify the importance of additional assumptions. We then present a minimal model of a strongly polarizable molecule which shows a strongly asymmetric I/V calculated within time-dependent DMRG.
PACS: 85.65.+h – Molecular electronic devices / 72.10.-d – Theory of electronic transport; scattering mechanisms / 73.63.-b – Electronic transport in nanoscale materials and structures
© EPLA, 2014