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Coexistence of Coulomb blockade and zero bias anomaly in a strongly coupled nanodot
L Bitton1, D B Gutman, R Berkovits
1Department of Physics, Bar Ilan University, Ramat Gan 52900, Israel.
Abstract:
The current-voltage characteristics through a metallic nanoparticle which is well coupled to a metallic lead are measured. It is shown that the I-V curves are composed of two contributions. One is a suppression of the tunneling conductivity at the Fermi level, and the second is an oscillating feature which shifts with gate voltage. The results indicate that zero-bias anomaly and Coulomb blockade phenomena coexist in an asymmetric strongly coupled zero-dimensional system.
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