Title: Single electron charging in parallel coupled quantum dots
Abstract: We report low-temperature conductance measurements in the Coulomb blockade regime on two nominally identical tunnel-coupled quantum dots in parallel defined electrostatically in the two-dimensional electron gas of a GaAs/AlGaAs heterostructure. At low interdot tunnel coupling we find that the conductance measured through one dot is sensitive to the charge state of the neighboring dot. At larger interdot coupling the conductance data reflect the role of quantum charge fluctuations between the dots. As the interdot conductance approaches 2e2/h, the coupled dots behave as a single large dot.
Publication Year: 1996
Publication Date: 1996-10-01
Language: en
Type: article
Indexed In: ['crossref']
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Cited By Count: 17
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