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Transport électronique dans un assemblée bidimensionnelle de nanoparticules métalliques dispersées dans une jonction tunnem

Abstract : We are exploring the electronic transport properties of an assembly of metallic
nanoparticles embedded in a tunnel junction. The clusters are small enough to be in the
Coulomb blockade regime: as long as the voltage applied to the junction is below a threshold,
electrons cannot tunnel from one electrode to the other. Thus, varying the voltage directly
influences the charge in the tunnel junction. In other words, the voltage may control the
capacitance of the structure. A model was derived which described the capacitive behaviour
of these systems. In the experimental part the influence of the junction parameters on the
capacitance variation is studied. A large variation is obtained for a junction with highly
dissymmetric dielectrics from both points of view, their thicknesses as well as their dielectric
constants. The cluster assembly has to be dense, slightly size dispersed and with very small
clusters in order to increase the working temperature. As an outlook, we have studied the
possibility of using those systems in electronic devices.
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https://tel.archives-ouvertes.fr/tel-00011925
Contributor : Nathalie Lidgi-Guigui <>
Submitted on : Sunday, March 12, 2006 - 2:00:38 PM
Last modification on : Wednesday, December 9, 2020 - 3:12:29 PM
Long-term archiving on: : Tuesday, April 6, 2010 - 4:49:18 PM

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  • HAL Id : tel-00011925, version 1

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Nathalie Lidgi. Transport électronique dans un assemblée bidimensionnelle de nanoparticules métalliques dispersées dans une jonction tunnem. Matière Condensée [cond-mat]. Université Pierre et Marie Curie - Paris VI, 2005. Français. ⟨tel-00011925⟩

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