Light scattering in GaAs parabolic quantum wells

J. Menéndez; A. Pinczuk; A. C. Gossard; M. G. Lamont; F. Cerdeira

doi:10.1016/0038-1098(87)90369-3

Light scattering in GaAs parabolic quantum wells

J. Menéndez, A. Pinczuk, A. C. Gossard, M. G. Lamont, F. Cerdeira

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20 Scopus citations

Abstract

We report the observation of electronic light scattering in photoexcited parabolic GaAsAl_xGa_1-xAs quantum wells. The spectra show sharp peaks corresponding to transitions between sublevels in the conduction band. The precision of the measurements allows a test of the simple harmonic oscillator model for the energy level structure. The energy gap and alloy composition of the Al_xGa_1-xAs layers are determined from resonance Raman scattering by optical phonons. We use these results to calculate the conduction band offset Q_e. We obtain Q_e ∼ 0.7, in agreement with recent experiments in square quantum wells.

Original language	English (US)
Pages (from-to)	601-605
Number of pages	5
Journal	Solid State Communications
Volume	61
Issue number	10
DOIs	https://doi.org/10.1016/0038-1098(87)90369-3
State	Published - Mar 1987
Externally published	Yes

ASJC Scopus subject areas

General Chemistry
Condensed Matter Physics
Materials Chemistry

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10.1016/0038-1098(87)90369-3

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title = "Light scattering in GaAs parabolic quantum wells",

abstract = "We report the observation of electronic light scattering in photoexcited parabolic GaAsAlxGa1-xAs quantum wells. The spectra show sharp peaks corresponding to transitions between sublevels in the conduction band. The precision of the measurements allows a test of the simple harmonic oscillator model for the energy level structure. The energy gap and alloy composition of the AlxGa1-xAs layers are determined from resonance Raman scattering by optical phonons. We use these results to calculate the conduction band offset Qe. We obtain Qe ∼ 0.7, in agreement with recent experiments in square quantum wells.",

author = "J. Men{\'e}ndez and A. Pinczuk and Gossard, {A. C.} and Lamont, {M. G.} and F. Cerdeira",

year = "1987",

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T1 - Light scattering in GaAs parabolic quantum wells

AU - Menéndez, J.

AU - Pinczuk, A.

AU - Gossard, A. C.

AU - Lamont, M. G.

AU - Cerdeira, F.

PY - 1987/3

Y1 - 1987/3

N2 - We report the observation of electronic light scattering in photoexcited parabolic GaAsAlxGa1-xAs quantum wells. The spectra show sharp peaks corresponding to transitions between sublevels in the conduction band. The precision of the measurements allows a test of the simple harmonic oscillator model for the energy level structure. The energy gap and alloy composition of the AlxGa1-xAs layers are determined from resonance Raman scattering by optical phonons. We use these results to calculate the conduction band offset Qe. We obtain Qe ∼ 0.7, in agreement with recent experiments in square quantum wells.

AB - We report the observation of electronic light scattering in photoexcited parabolic GaAsAlxGa1-xAs quantum wells. The spectra show sharp peaks corresponding to transitions between sublevels in the conduction band. The precision of the measurements allows a test of the simple harmonic oscillator model for the energy level structure. The energy gap and alloy composition of the AlxGa1-xAs layers are determined from resonance Raman scattering by optical phonons. We use these results to calculate the conduction band offset Qe. We obtain Qe ∼ 0.7, in agreement with recent experiments in square quantum wells.

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VL - 61

SP - 601

EP - 605

JO - Solid State Communications

JF - Solid State Communications

IS - 10

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Light scattering in GaAs parabolic quantum wells

Abstract

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