Electron transport across capped Au nanoclusters adsorbed in different configurations on highly oriented pyrolytic graphite substrate using scanning tunneling microscopy / spectroscopy

Comparison of electron transport across dodecanethiol capped Au nanoclusters adsorbed in different locations viz. in an agglomeration, on isolated particle either on the terrace or at the step edge of highly oriented pyrolytic graphite using scanning tunneling microscopy / spectroscopy is carried ou...

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Bibliographic Details
Published in:Journal of physics. Conference series 2007-04, Vol.61 (1), p.1076-1080
Main Authors: Singh, Poonam, Dharmadhikari, C V
Format: Article
Language:English
Subjects:
Distance measurement
Electrical measurement
Electron transport
Microscopy
Nanoclusters
Physics
Pyrolytic graphite
Scanning tunneling microscopy
Spectrum analysis
Substrates
Tunnel junctions
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Summary:Comparison of electron transport across dodecanethiol capped Au nanoclusters adsorbed in different locations viz. in an agglomeration, on isolated particle either on the terrace or at the step edge of highly oriented pyrolytic graphite using scanning tunneling microscopy / spectroscopy is carried out. Current-distance measurements on these different locations shows different regimes suggesting different mechanisms for electron transport. Current-voltage measurements at these locations have been carried out and the results are discussed in the light of orthodox theory for electron transport in double-barrier tunnel junction.
ISSN:1742-6596
1742-6588
1742-6596
DOI:10.1088/1742-6596/61/1/213