Absorption measurements at high pressure (0-10kbar) on strained superlattices

P. Garrilovic; K. Meehan; N. Holonyak; K. Hess; W. P. Zurawsky; H. G. Drickamer; M. J. Ludowise; W. T. Dietze; C. R. Lewis

doi:10.1016/0038-1098(83)90804-9

Absorption measurements at high pressure (0-10kbar) on strained superlattices

P. Garrilovic, K. Meehan, N. Holonyak, K. Hess, W. P. Zurawsky, H. G. Drickamer, M. J. Ludowise, W. T. Dietze, C. R. Lewis

Chemical and Biomolecular Engineering

Research output: Contribution to journal › Article › peer-review

Abstract

Absorption data on strained GaAs_1-xP_x-GaAs superlattices (SL, 128-period, barrier size L_B≈75 Å, quantum-well size L_z≈75 Å, alloy composition x≈0.25) are presented in the range 0-10 kbars. The absorption curves obtained show no exciton show no exciton peaks such as seen in lattice- matched Al_xGa_1-xAs-GaAs SL's, and the pressure coefficient decreases from 11.5 meV/kbar to ≈ 10.5 meV/kbar in the wells and ≈6.5 meV/kbar at energies approaching and above the barrier energies. This behavior is attributed to the fluctuations in strain caused by the alloy disorder, and clustering, of the barriers.

Original language	English (US)
Pages (from-to)	803-806
Number of pages	4
Journal	Solid State Communications
Volume	45
Issue number	9
DOIs	https://doi.org/10.1016/0038-1098(83)90804-9
State	Published - Mar 1983

ASJC Scopus subject areas

General Chemistry
Condensed Matter Physics
Materials Chemistry

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10.1016/0038-1098(83)90804-9

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@article{35f50c83016f4a3896fa1c4c52cc4696,

title = "Absorption measurements at high pressure (0-10kbar) on strained superlattices",

abstract = "Absorption data on strained GaAs1-xPx-GaAs superlattices (SL, 128-period, barrier size LB≈75 {\AA}, quantum-well size Lz≈75 {\AA}, alloy composition x≈0.25) are presented in the range 0-10 kbars. The absorption curves obtained show no exciton show no exciton peaks such as seen in lattice- matched AlxGa1-xAs-GaAs SL's, and the pressure coefficient decreases from 11.5 meV/kbar to ≈ 10.5 meV/kbar in the wells and ≈6.5 meV/kbar at energies approaching and above the barrier energies. This behavior is attributed to the fluctuations in strain caused by the alloy disorder, and clustering, of the barriers.",

author = "P. Garrilovic and K. Meehan and N. Holonyak and K. Hess and Zurawsky, {W. P.} and Drickamer, {H. G.} and Ludowise, {M. J.} and Dietze, {W. T.} and Lewis, {C. R.}",

note = "Funding Information: The authors are grateful to R. Bell for hls interest in this work, M.D. Camras for emission data, and to Y.S. Moroz, B.L° Marshall, R.D. Fults and B.L. Payne (Illinois), and S. Hikldo and K. Moran (Varlan) for technical support. The work of the Illinois group has been supported by NSF Grants ECS 82-00517 and D~-80-20250, Army Research Office Contract DAAG 29-82-K-0059, and U.S. Department of Energy Contract DE-AC02-76ER01198.",

year = "1983",

month = mar,

doi = "10.1016/0038-1098(83)90804-9",

language = "English (US)",

volume = "45",

pages = "803--806",

journal = "Solid State Communications",

issn = "0038-1098",

publisher = "Elsevier Limited",

number = "9",

}

TY - JOUR

T1 - Absorption measurements at high pressure (0-10kbar) on strained superlattices

AU - Garrilovic, P.

AU - Meehan, K.

AU - Holonyak, N.

AU - Hess, K.

AU - Zurawsky, W. P.

AU - Drickamer, H. G.

AU - Ludowise, M. J.

AU - Dietze, W. T.

AU - Lewis, C. R.

N1 - Funding Information: The authors are grateful to R. Bell for hls interest in this work, M.D. Camras for emission data, and to Y.S. Moroz, B.L° Marshall, R.D. Fults and B.L. Payne (Illinois), and S. Hikldo and K. Moran (Varlan) for technical support. The work of the Illinois group has been supported by NSF Grants ECS 82-00517 and D~-80-20250, Army Research Office Contract DAAG 29-82-K-0059, and U.S. Department of Energy Contract DE-AC02-76ER01198.

PY - 1983/3

Y1 - 1983/3

N2 - Absorption data on strained GaAs1-xPx-GaAs superlattices (SL, 128-period, barrier size LB≈75 Å, quantum-well size Lz≈75 Å, alloy composition x≈0.25) are presented in the range 0-10 kbars. The absorption curves obtained show no exciton show no exciton peaks such as seen in lattice- matched AlxGa1-xAs-GaAs SL's, and the pressure coefficient decreases from 11.5 meV/kbar to ≈ 10.5 meV/kbar in the wells and ≈6.5 meV/kbar at energies approaching and above the barrier energies. This behavior is attributed to the fluctuations in strain caused by the alloy disorder, and clustering, of the barriers.

AB - Absorption data on strained GaAs1-xPx-GaAs superlattices (SL, 128-period, barrier size LB≈75 Å, quantum-well size Lz≈75 Å, alloy composition x≈0.25) are presented in the range 0-10 kbars. The absorption curves obtained show no exciton show no exciton peaks such as seen in lattice- matched AlxGa1-xAs-GaAs SL's, and the pressure coefficient decreases from 11.5 meV/kbar to ≈ 10.5 meV/kbar in the wells and ≈6.5 meV/kbar at energies approaching and above the barrier energies. This behavior is attributed to the fluctuations in strain caused by the alloy disorder, and clustering, of the barriers.

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U2 - 10.1016/0038-1098(83)90804-9

DO - 10.1016/0038-1098(83)90804-9

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VL - 45

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EP - 806

JO - Solid State Communications

JF - Solid State Communications

IS - 9

ER -

Absorption measurements at high pressure (0-10kbar) on strained superlattices

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