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Transmission spectroscopy on sawtooth-doping superlattices

Transmission spectroscopy on sawtooth-doping superlattices We have performed transmission experiments on sawtooth-doping superlattices of short periodicity (100 – 200 A ̊ ). Oscillations have been observed in the transmission spectra as a function of frequency due to the size quantization effect. We present a microscopic model of the transmission which takes into account the coupling between quantum wells in the superlattices. A Kronig-Penney model for a V-shaped quantum well is presented and the dispersion is calculated. It is found that interwell tunneling is only important for high subbands. The electron impurity scattering is included within Born approximation. The random-phase-approximation density correlation function is used for the interband absorption. Excellent agreement between theory and experiment is obtained. http://www.deepdyve.com/assets/images/DeepDyve-Logo-lg.png Physical Review B American Physical Society (APS)

Transmission spectroscopy on sawtooth-doping superlattices

Physical Review B , Volume 39 (6) – Feb 15, 1989
4 pages

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References (1)

Publisher
American Physical Society (APS)
Copyright
Copyright © 1989 The American Physical Society
ISSN
1095-3795
DOI
10.1103/PhysRevB.39.3776
Publisher site
See Article on Publisher Site

Abstract

We have performed transmission experiments on sawtooth-doping superlattices of short periodicity (100 – 200 A ̊ ). Oscillations have been observed in the transmission spectra as a function of frequency due to the size quantization effect. We present a microscopic model of the transmission which takes into account the coupling between quantum wells in the superlattices. A Kronig-Penney model for a V-shaped quantum well is presented and the dispersion is calculated. It is found that interwell tunneling is only important for high subbands. The electron impurity scattering is included within Born approximation. The random-phase-approximation density correlation function is used for the interband absorption. Excellent agreement between theory and experiment is obtained.

Journal

Physical Review BAmerican Physical Society (APS)

Published: Feb 15, 1989

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