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- W2022791829 abstract "Using moving quantum dots defined by surface acoustic waves that allow us to observe correlated electron transport in micron-separated quantum point contacts (QPCs), we present evidence for electron transport efficiency change that occurs where the coupling between these QPCs is provided by a region of two-dimensional electron gas rather than a static quantum dot. It is found that, when the latter QPC is set beyond conductance pinch-off, sweeping the first QPC, the acoustoelectric current shows a triangular-shaped peak. On the other hand, as the first QPC defines the entrance barrier by applying a fixed voltage and the voltage applied to the latter QPC is varied, we observe a resonant peak in the acoustoelectric current that is correlated to the point where the swept-QPC conductance nearly pinches off. From a study of the experimental characteristics, we suggest that they may be associated with the energy level rearrangement in the multi-QPC system as a result of charging up by dynamic quantum dots with their neighboring two-dimensional electron gas reservoirs." @default.
- W2022791829 created "2016-06-24" @default.
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- W2022791829 date "2011-12-01" @default.
- W2022791829 modified "2023-10-16" @default.
- W2022791829 title "Electron transport driven by moving quantum dots in distant quantum point contacts" @default.
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- W2022791829 doi "https://doi.org/10.1209/0295-5075/96/67005" @default.
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