Single-Electron Effects in a Coupled Dot-Ring System
Mesoscale and Nanoscale Physics
2016-08-31 v1
Abstract
Aharonov-Bohm oscillations are studied in the magnetoconductance of a micron-sized open quantum ring coupled capacitively to a Coulomb-blockaded quantum dot. As the plunger gate of the dot is modulated and tuned through a conductance resonance, the amplitude of the Aharonov-Bohm oscillations in the transconductance of the ring displays a minimum. We demonstrate that the effect is due to a single-electron screening effect, rather than to dephasing. Aharonov-Bohm oscillations in a quantum ring can thus be used for the detection of single charges.
Cite
@article{arxiv.cond-mat/0406118,
title = {Single-Electron Effects in a Coupled Dot-Ring System},
author = {L. Meier and A. Fuhrer and T. Ihn and K. Ensslin and W. Wegscheider and M. Bichler},
journal= {arXiv preprint arXiv:cond-mat/0406118},
year = {2016}
}
Comments
5 pages, 3 figures