Berlin 2018 – wissenschaftliches Programm
O 35.7: Vortrag
Dienstag, 13. März 2018, 15:30–15:45, MA 042
Rectification in molecular charge transfer systems — •Simon Liebing, Torsten Hahn, and Jens Kortus — TU Bergakademie Freiberg, Institute for Theoretical Physics, Germany
Charge transfer enabling rectification in molecular junctions was suggested by Ratner in 1974.
In the early 2000’s strongly coupled system were excluded, because the strong coupling leads to symmetric transport behavior.
That left only weakly coupled charge transfer systems as candidates.
The authors studied different weakly coupling charge transfer dimers combining polycylic hydrocarbons and TNCQ-derivatives between gold leads.
The observed rectifications are comparable to molecular systems using an asymmetric coupling to metallic leads.
This shows that charge transfer is not alone suffient to achieve rectification in molecular electronics systems.
Aviram, A. & Ratner, M. Chem. Phys. Lett. 29, 277 (1974)
Mujica, V., Ratner, M. & Nitzan A. Chem. Phys. 281, 147 (2002)
Hahn T., Liebing S., & Kortus J. Nanoscale 6, 14508 (2014)