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VLSI Design
Volume 13 (2001), Issue 1-4, Pages 45-50
http://dx.doi.org/10.1155/2001/24258

Numerical Studies of Miniband Conduction in Quasi-One-Dimensional Superlattices

1Department of Electronic Engineering, Osaka University, Suita City, Osaka 565-0871, Japan
2School of Physics and Astronomy, University of Nottingham, Nottingham NG7 2RD, United Kingdom

Copyright © 2001 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.

Abstract

Monte Carlo simulations of electron motion in GaAs/A1As superlattices with narrow mini-band width are performed to investigate the effect of a strong magnetic field on miniband conduction. In the quantum limit at low temperatures when the cyclotron energy exceeds the miniband width, the miniband conduction is found to exhibit a strong suppression. This results from the quasi-one-dimensional states formed in the quantum limit and the restricted range of the scattering processes available to the conduction electrons. A small shoulder on the lower electric field side of the main peak is also found in marked contrast with Esaki-Tsu and Ignatov models.