Electronic Resource
Woodbury, NY
:
American Institute of Physics (AIP)
Applied Physics Letters
75 (1999), S. 3023-3025
ISSN:
1077-3118
Source:
AIP Digital Archive
Topics:
Physics
Notes:
We report on a chemical approach to fabricating double-barrier tunneling junction (DBTJ) for room-temperature single-electron tunneling studies, by which CdS nanoclusters were directly synthesized on a scanning tunneling microscopy (STM) tip through an organic self-assembled monolayer (SAM) and in situ chemical reaction. The SAM/CdS-modified STM tip directly establishes a DBTJ structure with highly oriented pyrolytic graphite substrate with STM-based current–voltage measurement. Clear Coulomb staircases were observed at room temperature with this experimental approach, and the reproducibility was nearly 90%. When gradually reducing the tip-substrate gap by increasing the setpoint current, the staircase width showed a gradual decrease from 320 to 180 mV. These phenomena are well described by semiclassical model for correlated single-electron tunneling. © 1999 American Institute of Physics.
Type of Medium:
Electronic Resource
URL:
http://dx.doi.org/10.1063/1.125221
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