Coexistence of Coulomb blockade and zero bias anomaly in a strongly coupled quantum dot

Details Coexistence of Coulomb blockade and zero bias anomaly in a strongly coupled quantum dot Coexistence of Coulomb blockade and zero bias anomaly in a strongly coupled quantum dot

2010-07-25

arxiv.org/abs/1007.4300v1

Phys. Rev Lett. 106, 016803 (2011)

Physics

Condensed Matter

Mesoscale and Nanoscale Physics

4 pages, 4 figures

Scientific paper

The current-voltage characteristics through a metallic quantum dot 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 quantum dot.

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