VLSI Design

VLSI Design / 1998 / Article
Special Issue

Computational Electronics

View this Special Issue

Open Access

Volume 8 |Article ID 40393 | 6 pages | https://doi.org/10.1155/1998/40393

Electron-LA Phonon Interaction in a Quantum Dot

Abstract

Relaxation time due to electron-longitudinal-acoustic (LA) phonon interaction is calculated in a GaAs quantum dot (QD) with N electrons (from N = 1 to 4), where electrons in a narrow quantum well are confined by a parabolic confining potential, by using the exact eigen states of electrons. Although the energy levels become dense with increasing the number of electrons, the modification of the relaxation time is found to be not so strong, which attributes the fact that many electron eigen states consist of only a few dominant single electron states which limit the electron relaxation. By comparing relaxation process via intermediate states with the direct process, several fastest processes are found to be realized by relaxation through intermediate states between the initial state and the ground state. The effect of change in the quantum well width is also discussed.

Copyright © 1998 Hindawi Publishing Corporation. This is an open access article distributed under the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.


More related articles

0 Views | 0 Downloads | 0 Citations
 PDF  Download Citation  Citation
 Order printed copiesOrder

Related articles

We are committed to sharing findings related to COVID-19 as quickly and safely as possible. Any author submitting a COVID-19 paper should notify us at help@hindawi.com to ensure their research is fast-tracked and made available on a preprint server as soon as possible. We will be providing unlimited waivers of publication charges for accepted articles related to COVID-19. Sign up here as a reviewer to help fast-track new submissions.