Electronic transport in single molecule junctions: Control of the molecule-electrode coupling through intramolecular tunneling barriers
Artikel i vetenskaplig tidskrift, 2008

We report on single molecule electron transport measurements of two oligophenylenevinylene (OPV3) derivatives placed in a nanogap between gold (Au) or lead (Pb) electrodes in a field effect transistor device. Both derivatives contain thiol end groups that allow chemical binding to the electrodes. One derivative has additional methylene groups separating the thiols from the delocalized pi-electron system. The insertion of methylene groups changes the open state conductance by 3-4 orders of magnitude and changes the transport mechanism from a coherent regime with finite zero-bias conductance to sequential tunneling and Coulomb blockade behavior.

3-TERMINAL DEVICES

CHARGE-TRANSPORT

SELF-ASSEMBLED MONOLAYERS

Författare

Andrey Danilov

Chalmers, Mikroteknologi och nanovetenskap (MC2), Kvantkomponentfysik

Sergey Kubatkin

Chalmers, Mikroteknologi och nanovetenskap (MC2), Kvantkomponentfysik

Serguei Kafanov

Chalmers, Mikroteknologi och nanovetenskap (MC2), Kvantkomponentfysik

P. Hedegard

Niels Bohr Institute

N. Stuhr-Hansen

Niels Bohr Institute

K. Moth-Poulsen

Niels Bohr Institute

T. Bjornholm

Niels Bohr Institute

Nano Letters

1530-6984 (ISSN) 1530-6992 (eISSN)

Vol. 8 1-5

Ämneskategorier

Den kondenserade materiens fysik

DOI

10.1021/nl071228o