Nano Science and Technology Institute
Nanotech 2007 Vol. 1
Nanotech 2007 Vol. 1
Technical Proceedings of the 2007 NSTI Nanotechnology Conference and Trade Show, Volume 1
Chapter 2: Nano Electronics & Photonics

Electron Effective Mass Of GaAs Double-Concentric Quantum Rings

Authors:I. Filikhin, E. Deyneka and B. Vlahovic
Affilation:North Carolina Central University, US
Pages:212 - 215
Keywords:quantum dots, electron effective mass, spectral propeties
Abstract:We carried out the calculations for the single carrier energy levels, and the optical transitions of these structures, with taking into account the effects resulting in change of the electron effective mass due to the GaAs/Al0.3Ga0.7As quantum ring (QR) and concentric double quantum rings (DQR) geometry transformation. We applied a single sub-band 3D model for GaAs QD/QR with the energy dependence of the electron effective mass. Our prediction for the electron effective mass of the DQR ground state is 0.077m0, which is 13% greater than the bulk value of 0.067m0. The effects of small variations of the geometrical profile on the electron energies of the quantum structures were also studied.
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