Second-order Raman spectroscopy of AlAs: A test of lattice-dynamical models

G. S. Spencer, J. Grant, R. Gray, J. Zolman, Jose Menendez, R. Droopad, G. N. Maracas

Research output: Contribution to journalArticle

13 Citations (Scopus)

Abstract

The second-order Raman spectrum of AlAs has been measured on samples grown by molecular-beam epitaxy (MBE). The results show significant discrepancies with model calculations of the phonon density of states, but are consistent with recent first-principles calculations. This first-principles approach has been used to compute the phonon energies in GaAs-AlAs superlattices, with controversial implications regarding the sharpness of MBE-grown interfaces. The Raman results presented here support the conclusions of the first-principles analysis.

Original languageEnglish (US)
Pages (from-to)5761-5764
Number of pages4
JournalPhysical Review B
Volume49
Issue number8
DOIs
StatePublished - 1994

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Molecular beam epitaxy
Raman spectroscopy
Superlattices
molecular beam epitaxy
Raman scattering
sharpness
superlattices
Raman spectra
energy
gallium arsenide

ASJC Scopus subject areas

  • Condensed Matter Physics

Cite this

Spencer, G. S., Grant, J., Gray, R., Zolman, J., Menendez, J., Droopad, R., & Maracas, G. N. (1994). Second-order Raman spectroscopy of AlAs: A test of lattice-dynamical models. Physical Review B, 49(8), 5761-5764. https://doi.org/10.1103/PhysRevB.49.5761

Second-order Raman spectroscopy of AlAs : A test of lattice-dynamical models. / Spencer, G. S.; Grant, J.; Gray, R.; Zolman, J.; Menendez, Jose; Droopad, R.; Maracas, G. N.

In: Physical Review B, Vol. 49, No. 8, 1994, p. 5761-5764.

Research output: Contribution to journalArticle

Spencer, GS, Grant, J, Gray, R, Zolman, J, Menendez, J, Droopad, R & Maracas, GN 1994, 'Second-order Raman spectroscopy of AlAs: A test of lattice-dynamical models', Physical Review B, vol. 49, no. 8, pp. 5761-5764. https://doi.org/10.1103/PhysRevB.49.5761
Spencer, G. S. ; Grant, J. ; Gray, R. ; Zolman, J. ; Menendez, Jose ; Droopad, R. ; Maracas, G. N. / Second-order Raman spectroscopy of AlAs : A test of lattice-dynamical models. In: Physical Review B. 1994 ; Vol. 49, No. 8. pp. 5761-5764.
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