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- W2000803286 abstract "We present a detailed analysis of single-electron charging effects in cylindrical vertical quantum dots (CVQD's). Emphasis is placed on three-dimensional (3D) device effects that induce appreciable features in the quantized electron spectrum and in the addition energy spectrum of CVQD's. A potential model based on a 3D analytical solution of the Poisson equation provides intuitive physical insight into the variation of the eigenspectrum as a function of the potential nonparabolicity. This analytical model is in good qualitative agreement with a full 3D self-consistent quantum simulation of single-electron charging in quantized CVQD's based on the density-functional theory. Hence we show that the spin sequences realized in filling the third and fourth electronic shells are a sensitive function of the potential nonparabolicity arising from the 3D CVQD geometry, and varying with applied gate bias. Within this ``atomic shell'' model, the addition energy spectrum reflects the influence of 3D device effects and is not necessarily a signature of a particular spin-filling sequence." @default.
- W2000803286 created "2016-06-24" @default.
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- W2000803286 date "2002-06-18" @default.
- W2000803286 modified "2023-10-17" @default.
- W2000803286 title "Three-dimensional analysis of the electronic structure of cylindrical vertical quantum dots" @default.
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- W2000803286 doi "https://doi.org/10.1103/physrevb.65.235323" @default.
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