Nanotech 2002 Vol. 1
Nanotech 2002 Vol. 1
Technical Proceedings of the 2002 International Conference on Modeling and Simulation of Microsystems

Quantum Effects, Quantum Devices and Spintronics Chapter 10

Computer Simulation of Electron Energy States for Three-Dimensional InAs/GaAs Semiconductor Quantum Rings

Authors: Y. Li, O. Voskoboynikov and C.P. Lee

Affilation: National Nano Device Laboratories, Taiwan

Pages: 540 - 543

Keywords: semiconductor quantum ring, InAs/GaAs, electronic state, computer simulation

In this article we study the electron energy states for three-dimensional (3D) semiconductor quantum rings. Our model formulation includes: (i) the effective one-band Hamiltonian approximation, (ii) the position and energy dependent quasi-particle effective mass approximation, (iii) the finite hard wall confinement potential, and (iv) the Ben Daniel-Duke boundary conditions. We solve the 3D model by nonlinear iterative algorithm to obtain self-consistent solutions. The model and simulation provide a novel way to calculate the energy levels of nano-scopic semiconductor quantum ring. They are useful to clarify the principal dependencies of quantum ring energy states on material band parameter, ring size and shape.

ISBN: 0-9708275-7-1
Pages: 764