Coulomb Blockade in an Open Quantum Dot
Mesoscale and Nanoscale Physics
2012-04-06 v1
Abstract
We report the observation of Coulomb blockade in a quantum dot contacted by two quantum point contacts each with a single fully-transmitting mode, a system previously thought to be well described without invoking Coulomb interactions. At temperatures below 50 mK we observe a periodic oscillation in the conductance of the dot with gate voltage that corresponds to a residual quantization of charge. From the temperature and magnetic field dependence, we infer the oscillations are Mesoscopic Coulomb Blockade, a type of Coulomb blockade caused by electron interference in an otherwise open system.
Cite
@article{arxiv.1009.5348,
title = {Coulomb Blockade in an Open Quantum Dot},
author = {S. Amasha and I. G. Rau and M. Grobis and R. M. Potok and H. Shtrikman and D. Goldhaber-Gordon},
journal= {arXiv preprint arXiv:1009.5348},
year = {2012}
}
Comments
Text and supplementary information. Text: 4 pages, 4 figures. Supplementary information: 4 pages, 4 figures