Resonance Raman scattering by confined LO and TO phonons in GaAs-AlAs superlattices

A. K. Sood, Jose Menendez, M. Cardona, K. Ploog

Research output: Contribution to journalArticle

419 Citations (Scopus)

Abstract

It is shown that in GaAs-AlAs superlattices the confined longitudinal-optic Raman phonons created via either deformation-potential or Fröhlich electron-phonon interaction are different. This effect is demonstrated by comparison of resonance and off-resonance Raman spectra. Phonons of A1 symmetry (point group D2d) dominate in resonance, while B2 phonons are stronger in the off-resonance case. The resonance profile of the A1 modes is discussed. We also report the observation of confined transverse-optic phonons under extremely resonant conditions.

Original languageEnglish (US)
Pages (from-to)2111-2114
Number of pages4
JournalPhysical Review Letters
Volume54
Issue number19
DOIs
StatePublished - 1985
Externally publishedYes

Fingerprint

resonance scattering
superlattices
phonons
Raman spectra
optics
electron phonon interactions
symmetry
profiles

ASJC Scopus subject areas

  • Physics and Astronomy(all)

Cite this

Resonance Raman scattering by confined LO and TO phonons in GaAs-AlAs superlattices. / Sood, A. K.; Menendez, Jose; Cardona, M.; Ploog, K.

In: Physical Review Letters, Vol. 54, No. 19, 1985, p. 2111-2114.

Research output: Contribution to journalArticle

Sood, A. K. ; Menendez, Jose ; Cardona, M. ; Ploog, K. / Resonance Raman scattering by confined LO and TO phonons in GaAs-AlAs superlattices. In: Physical Review Letters. 1985 ; Vol. 54, No. 19. pp. 2111-2114.
@article{818379827eb946edb84221dd10a8e9ee,
title = "Resonance Raman scattering by confined LO and TO phonons in GaAs-AlAs superlattices",
abstract = "It is shown that in GaAs-AlAs superlattices the confined longitudinal-optic Raman phonons created via either deformation-potential or Fr{\"o}hlich electron-phonon interaction are different. This effect is demonstrated by comparison of resonance and off-resonance Raman spectra. Phonons of A1 symmetry (point group D2d) dominate in resonance, while B2 phonons are stronger in the off-resonance case. The resonance profile of the A1 modes is discussed. We also report the observation of confined transverse-optic phonons under extremely resonant conditions.",
author = "Sood, {A. K.} and Jose Menendez and M. Cardona and K. Ploog",
year = "1985",
doi = "10.1103/PhysRevLett.54.2111",
language = "English (US)",
volume = "54",
pages = "2111--2114",
journal = "Physical Review Letters",
issn = "0031-9007",
publisher = "American Physical Society",
number = "19",

}

TY - JOUR

T1 - Resonance Raman scattering by confined LO and TO phonons in GaAs-AlAs superlattices

AU - Sood, A. K.

AU - Menendez, Jose

AU - Cardona, M.

AU - Ploog, K.

PY - 1985

Y1 - 1985

N2 - It is shown that in GaAs-AlAs superlattices the confined longitudinal-optic Raman phonons created via either deformation-potential or Fröhlich electron-phonon interaction are different. This effect is demonstrated by comparison of resonance and off-resonance Raman spectra. Phonons of A1 symmetry (point group D2d) dominate in resonance, while B2 phonons are stronger in the off-resonance case. The resonance profile of the A1 modes is discussed. We also report the observation of confined transverse-optic phonons under extremely resonant conditions.

AB - It is shown that in GaAs-AlAs superlattices the confined longitudinal-optic Raman phonons created via either deformation-potential or Fröhlich electron-phonon interaction are different. This effect is demonstrated by comparison of resonance and off-resonance Raman spectra. Phonons of A1 symmetry (point group D2d) dominate in resonance, while B2 phonons are stronger in the off-resonance case. The resonance profile of the A1 modes is discussed. We also report the observation of confined transverse-optic phonons under extremely resonant conditions.

UR - http://www.scopus.com/inward/record.url?scp=3643091426&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=3643091426&partnerID=8YFLogxK

U2 - 10.1103/PhysRevLett.54.2111

DO - 10.1103/PhysRevLett.54.2111

M3 - Article

VL - 54

SP - 2111

EP - 2114

JO - Physical Review Letters

JF - Physical Review Letters

SN - 0031-9007

IS - 19

ER -