Interface vibrational modes in GaAs-AlAs superlattices

A. K. Sood; J. Menéndez; M. Cardona; K. Ploog

doi:10.1103/PhysRevLett.54.2115

Interface vibrational modes in GaAs-AlAs superlattices

A. K. Sood, J. Menéndez, M. Cardona, K. Ploog

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

381 Scopus citations

Abstract

We report the observation of interface phonons by Raman scattering from GaAs-AlAs superlattices. These modes have frequencies close to the optical phonons of bulk GaAs and AlAs and resonate strongly for laser energies near the confined exciton levels of the GaAs quantum wells. The results are analyzed in terms of an electrostatic continuum model. In the long-wavelength limit this theory predicts the phonons of the layered media proposed by Merlin et al.

Original language	English (US)
Pages (from-to)	2115-2118
Number of pages	4
Journal	Physical Review Letters
Volume	54
Issue number	19
DOIs	https://doi.org/10.1103/PhysRevLett.54.2115
State	Published - Jan 1 1985
Externally published	Yes

ASJC Scopus subject areas

General Physics and Astronomy

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10.1103/PhysRevLett.54.2115

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title = "Interface vibrational modes in GaAs-AlAs superlattices",

abstract = "We report the observation of interface phonons by Raman scattering from GaAs-AlAs superlattices. These modes have frequencies close to the optical phonons of bulk GaAs and AlAs and resonate strongly for laser energies near the confined exciton levels of the GaAs quantum wells. The results are analyzed in terms of an electrostatic continuum model. In the long-wavelength limit this theory predicts the phonons of the layered media proposed by Merlin et al.",

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AU - Sood, A. K.

AU - Menéndez, J.

AU - Cardona, M.

AU - Ploog, K.

PY - 1985/1/1

Y1 - 1985/1/1

N2 - We report the observation of interface phonons by Raman scattering from GaAs-AlAs superlattices. These modes have frequencies close to the optical phonons of bulk GaAs and AlAs and resonate strongly for laser energies near the confined exciton levels of the GaAs quantum wells. The results are analyzed in terms of an electrostatic continuum model. In the long-wavelength limit this theory predicts the phonons of the layered media proposed by Merlin et al.

AB - We report the observation of interface phonons by Raman scattering from GaAs-AlAs superlattices. These modes have frequencies close to the optical phonons of bulk GaAs and AlAs and resonate strongly for laser energies near the confined exciton levels of the GaAs quantum wells. The results are analyzed in terms of an electrostatic continuum model. In the long-wavelength limit this theory predicts the phonons of the layered media proposed by Merlin et al.

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Interface vibrational modes in GaAs-AlAs superlattices

Abstract

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