Abstract: | |
We demonstrate the tunability of a GaAsAlGaAs quantum ring showing coherent Aharonov-Bohm oscillations up to a gate voltage regime where the ring splits into three quantum dots. This is explained based on the structure's special confinement potential. We characterized the dots by analyzing the corresponding sets of Coulomb blockade lines. Additionally, the spatial configuration of the dots was confirmed by charge measurements using an adjacent quantum point contact. © 2008 American Institute of Physics.
|
|
License of this version: | Es gilt deutsches Urheberrecht. Das Dokument darf zum eigenen Gebrauch kostenfrei genutzt, aber nicht im Internet bereitgestellt oder an Außenstehende weitergegeben werden. |
Publication type: | Article |
Publishing status: | publishedVersion |
Publication date: | 2008 |
Keywords english: | Coulomb blockade, Electric charge measurement, Quantum chemistry, Semiconducting gallium compounds, Voltage measurement, Aharonov Bohm oscillations, Gate voltage regimes, Quantum rings, Spatial configuration, Semiconductor quantum dots |
DDC: | 530 | Physik |
Showing items related by title, author, creator and subject.