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25 April 2024 |
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Article overview
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Single-electron charging and detection in a laterally-coupled quantum dot circuit in the few-electron regime | | L.-X. Zhang
; P. Matagne
; J.P. Leburton
; R. Hanson
; L. P. Kouwenhoven
; | | Date: |
3 Nov 2003 | | Subject: | Mesoscopic Systems and Quantum Hall Effect | cond-mat.mes-hall | | Abstract: | We provide a physical analysis of the charging and detection of the first few electrons in a laterally-coupled GaAs/AlGaAs quantum dot (LCQD) circuit with integrated quantum point contact (QPC) read-out. Our analysis is based on the numerical solution of the Kohn-Sham equation incorporated into a three-dimensional self-consistent scheme for simulating the quantum device. Electronic states and eigenenergy spectra reflecting the particular LCQD confinement shape are obtained as a function of external gate voltages. We also derive the stability diagram for the first few electrons in the device, and obtain excellent agreement with experimental data. | | Source: | arXiv, cond-mat/0311044 | | Services: | Forum | Review | PDF | Favorites | |
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