Observation of Conductance and Room Temperature Coulomb Blockade in a Molecule
Abstract
Molecules of 1,4-dithiol-benzene are self assembled onto the two facing gold electrodes of a mechanically controllable break junction (MCB) to form a statically stable gold-sulfur-phenyl-sulfur-gold system, which allows for direct observation of charge transport through the molecules. Current-voltage I(V) measurements at room temperature demonstrate a highly reproducible apparent Coulomb blockade gap 0.7V. The conductance-voltage G(V) curve shows two steps in both bias directions with the first step 0.045 5S and the second step 0.075 5S, indicative of a Coulomb staircase. The number of active molecules could be as few as one.
- Publication:
-
APS March Meeting Abstracts
- Pub Date:
- March 1997
- Bibcode:
- 1997APS..MAR..J205R