We present simulation results obtained using a 3D coupled Schrödinger-Poisson equation solver. Of special interest in this work were the effects that discrete impurities have on the energy spectra in the dot and how these effects can be used to better explain conductance peaks observed in experiment
3D modeling of silicon quantum dots
✍ Scribed by S.N. Miličić; F. Badrieh; D. Vasileska; A. Gunther; S.M. Goodnick
- Publisher
- Elsevier Science
- Year
- 2000
- Tongue
- English
- Weight
- 701 KB
- Volume
- 27
- Category
- Article
- ISSN
- 0749-6036
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✦ Synopsis
We present results of full 3D self-consistent simulations of the energy spectrum in siliconbased symmetric quantum dots. Numerically derived conductance peak dependence upon the depletion and top gate biases closely resembles the experimentally measured ones, suggesting that conductance peak is measured when some discrete energy level in the dot coincides with the Fermi level. Electron wavefunction mode mixing is observed when atomistic description of the impurity distribution in the semiconductor was used.
📜 SIMILAR VOLUMES
We have developed a numerical approach to calculate the confining potential and charge profiles in silicon quantum dots. We use a 3D generalization of the strongly implicit procedure for the Poisson equation. The efficient difference approximation, proposed by Scharfetter and Gummel, was extended to