DOI: 10.1063/1.324066. Absorption, refractive index, and birefringence of AlAs-GaAs monolayers

Absorption, refractive index, and birefringence of AlAs-GaAs monolayers

10.1063/1.324066

Crossref journal-article

AIP Publishing

Journal of Applied Physics (317)

Abstract

The band structure of artificial periodic crystals grown by molecular-beam epitaxy and consisting of sequential AlAs and GaAs monolayers differs slightly from AlxGa1−xAs random alloys having a comparable average Al content. The measured direct band gaps are up to 110 meV higher than the alloys, and the indirect gaps up to 70 meV higher. The measured dispersion of the refractive index agrees best with the theoretical dispersion curve of an alloy composition having a higher Al content than in the monolayer. This is consistent with the higher band gap of the monolayer. The alloy and monolayer exhibit a birefringence resulting from strain-induced anisotropy of the lower and upper cutoffs of the complex part of the dielectric constant. The strain results from the differential thermal contraction of the layers and the GaAs substrate on cooling from the growth temperature to room temperature. The birefringence of the monolayer sample contains an additional contribution resulting from the periodic structure.

Bibliography

van der Ziel, J. P., & Gossard, A. C. (1977). Absorption, refractive index, and birefringence of AlAs-GaAs monolayers. Journal of Applied Physics, 48(7), 3018â3023.

Authors 2

J. P. van der Ziel (first)
A. C. Gossard (additional)

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Dates

Type	When
Created	22 years, 6 months ago (Feb. 14, 2003, 4:28 p.m.)
Deposited	1 year, 6 months ago (Feb. 4, 2024, 3:01 p.m.)
Indexed	1 year ago (Aug. 23, 2024, 7:53 a.m.)
Issued	48 years, 2 months ago (July 1, 1977)
Published	48 years, 2 months ago (July 1, 1977)
Published Print	48 years, 2 months ago (July 1, 1977)

Funders 0

None

BibTeX

@article{van_der_Ziel_1977, title={Absorption, refractive index, and birefringence of AlAs-GaAs monolayers}, volume={48}, ISSN={1089-7550}, url={http://dx.doi.org/10.1063/1.324066}, DOI={10.1063/1.324066}, number={7}, journal={Journal of Applied Physics}, publisher={AIP Publishing}, author={van der Ziel, J. P. and Gossard, A. C.}, year={1977}, month=jul, pages={3018–3023} }

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