Transport spectroscopy of a confined electron system under a gate tip
- 15 November 1992
- journal article
- research article
- Published by American Physical Society (APS) in Physical Review B
- Vol. 46 (19) , 12837-12840
- https://doi.org/10.1103/physrevb.46.12837
Abstract
Conductance resonances measured for split-gate structures around threshold are interpreted in terms of single-electron tunneling through a quantum dot beneath the tip of the gate finger. Measurements at different values of source-drain voltage allow the spectroscopy of excited states for a fixed number of electrons in the quantum dot. The measured magnetic-field dependence of the conductance resonances is consistent with a minimal number of seven electrons in the quantum dot.Keywords
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