Andres RP, and
Dept. of Phys., Purdue Univ., West Lafayette, IN, USA.
Room-temperature Coulomb blockade from a self-assembled molecular
Physical Review B-Condensed Matter, vol.52, no.12, 15 Sept. 1995, pp.9071-7.
Nanometer-size Au clusters deposited from a cluster beam onto a thin dithiol
film were studied at room temperature using an ultrahigh vacuum scanning
tunneling microscope (STM). The dithiol molecules tether the deposited Au
clusters to the underlying gold substrate and repeatable STM scans of the Au
clusters were achieved. Data of the tunneling current as a function of
applied voltage yield reproducible evidence for single-electron tunneling at
room temperature. By fitting the measured I(V) data to a Coulomb blockade
model, estimates for the electrical resistance of a single dithiol molecule
are also obtained. (33 References).