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Proceedings Paper

Application of a mode-matching technique to quantum-wire transitions and discontinuities
Author(s): Andreas Weisshaar; Jenifer E. Lary; Stephen M. Goodnick; Vijai K. Tripathi
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Paper Abstract

Modal expansions of the wave function and a mode-matching technique are used to calculate the transmission characteristics of semiconductor quantum wire structures assuming hard wall confmement in the transverse directions. Results for cascaded right-angle bends and periodic structures in a split-gate configuration are presented. A sharp transition to a plateau of zero conductance is observed for the double bend configuration. For periodic structures in the split-gate configuration, highly resonant behavior similar to that in tunneling resonant diodes is found. Calculated current-voltage characteristics for the case of two narrow constrictions are shown, exhibiting a region of negative differential resistance.

Paper Details

Date Published: 1 October 1990
PDF: 12 pages
Proc. SPIE 1284, Nanostructure and Microstructure Correlation with Physical Properties of Semiconductors, (1 October 1990); doi: 10.1117/12.20772
Show Author Affiliations
Andreas Weisshaar, Oregon State Univ. (United States)
Jenifer E. Lary, Oregon State Univ. (United States)
Stephen M. Goodnick, Oregon State Univ. (United States)
Vijai K. Tripathi, Oregon State Univ. (India)

Published in SPIE Proceedings Vol. 1284:
Nanostructure and Microstructure Correlation with Physical Properties of Semiconductors
Harold G. Craighead; J. Murray Gibson, Editor(s)

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