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Investigation of the electrical properties of metallic nanoclusters

  • Naser QamhiehEmail author
Regular Article
  • 146 Downloads
Part of the following topical collections:
  1. Topical issue: ISSPIC 16 - 16th International Symposium on Small Particles and Inorganic Clusters

Abstract

Palladium nanoclusters were prepared by magnetron sputtering and inert gas condensation technique and deposited between two gold electrodes. We have investigated the current-voltage characteristics at temperatures between 45 and 300 K. The conduction-voltage profile allows calculating the number of potential barriers, n electrons have to cross while conducting through a percolation path. n is found to increase with decreasing temperature. The observed temperature dependence of the conductance is Arrhenius-like above 140 K, with activation energy much smaller than the calculated Coulomb blockade energy. It suggests that some of the nanoclusters are fused together. At temperatures below 140 K the conductance-temperature data was fitted with Efros-Shklovskii model for conduction where variable range hopping is dominating the electron transport mechanism. The presence of variable range hopping may interpret the increase of n with decreasing temperature.

Keywords

Bias Voltage Magnetron Sputtering Coulomb Blockade Main Chamber Percolation Path 
These keywords were added by machine and not by the authors. This process is experimental and the keywords may be updated as the learning algorithm improves.

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Copyright information

© EDP Sciences, SIF, Springer-Verlag Berlin Heidelberg 2013

Authors and Affiliations

  1. 1.Department of PhysicsUnited Arab Emirates UniversityAl AinUnited Arab Emirates

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