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  4. Coulomb blockade in a granular material made of gold nanowires
 
conference paper

Coulomb blockade in a granular material made of gold nanowires

Guerin, Hoel
•
Yoshihira, Masanori
•
Kura, Hiroaki
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2012
Proceedings of the 12th IEEE International Conference on Nanotechnology (IEEE-NANO)
12th IEEE International Conference on Nanotechnology (IEEE-NANO)

Uniform, 2 nm diameter gold nanowires were synthesized through the reduction of gold(III) chloride in an oleylamine matrix. They were top-contacted on a Si/SiO2 substrate with metallic electrodes to manufacture back-gated transistors. Due to thermal breakage, the gold nanowires were fragmented into a granular material and the non-linear current-bias voltage characteristics measured on the devices from 7 K up to 300 K were described by the Coulomb blockade theory in a nearly one-dimensional quantum dot array. The electronic transport was governed by sequential tunneling at an applied bias above the global Coulomb blockade threshold, whereas in the Coulomb blockade regime, inelastic cotunneling was dominant up to 70 K, at which point it crossed over to activated behavior. The current dependence on the gate voltage that showed irregular oscillations was explained by the superimposition of Coulomb oscillation patterns generated by each different dot in the one-dimensional array. The competitive effects of excitation energy and stochastic Coulomb blockade balanced the number of current peaks observed.

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Type
conference paper
DOI
10.1109/NANO.2012.6322047
Web of Science ID

WOS:000309933900162

Author(s)
Guerin, Hoel
Yoshihira, Masanori
Kura, Hiroaki
Ogawa, Tomoyuki
Sato, Tetsuya
Maki, Hideyuki
Date Issued

2012

Published in
Proceedings of the 12th IEEE International Conference on Nanotechnology (IEEE-NANO)
ISBN of the book

978-1-4673-2198-3

Total of pages

5

Subjects

granular material

•

Au gold nanowires

•

Coulomb blockade

Editorial or Peer reviewed

REVIEWED

Written at

EPFL

EPFL units
NANOLAB  
Event nameEvent placeEvent date
12th IEEE International Conference on Nanotechnology (IEEE-NANO)

Birmingham, United Kingdom

August 20-23, 2012

Available on Infoscience
February 27, 2013
Use this identifier to reference this record
https://infoscience.epfl.ch/handle/20.500.14299/89894
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