Resonance Raman scattering in CdTe-ZnTe superlattices

Jose Menendez, A. Pinczuk, J. P. Valladares, R. D. Feldman, R. F. Austin

Research output: Contribution to journalArticle

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Abstract

We present a resonance Raman study of strain and excitons in CdTe-ZnTe superlattices. We obtain the strain configuration of the samples from the strain-induced shifts in the Raman frequencies of confined longitudinal optical phonons. We find that CdTe-ZnTe superlattices are not always in a free-standing configuration, as previously suggested. For individual layer thicknesses of the order of 20-30 Å, our superlattices can be grown lattice matched with their Cd0.1Zn0.9Te substrates. In resonance with the fundamental gap of the superlattice, we observe an enhancement of the Raman cross section not only for CdTe phonons but also (in the samples with the thinnest layers) for phonons confined in ZnTe. This behavior can be understood in terms of a small valence-band offset.

Original languageEnglish (US)
Pages (from-to)1101-1103
Number of pages3
JournalApplied Physics Letters
Volume50
Issue number16
DOIs
StatePublished - 1987
Externally publishedYes

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resonance scattering
superlattices
phonons
Raman spectra
configurations
excitons
valence
augmentation
shift
cross sections

ASJC Scopus subject areas

  • Physics and Astronomy (miscellaneous)

Cite this

Menendez, J., Pinczuk, A., Valladares, J. P., Feldman, R. D., & Austin, R. F. (1987). Resonance Raman scattering in CdTe-ZnTe superlattices. Applied Physics Letters, 50(16), 1101-1103. https://doi.org/10.1063/1.97931

Resonance Raman scattering in CdTe-ZnTe superlattices. / Menendez, Jose; Pinczuk, A.; Valladares, J. P.; Feldman, R. D.; Austin, R. F.

In: Applied Physics Letters, Vol. 50, No. 16, 1987, p. 1101-1103.

Research output: Contribution to journalArticle

Menendez, J, Pinczuk, A, Valladares, JP, Feldman, RD & Austin, RF 1987, 'Resonance Raman scattering in CdTe-ZnTe superlattices', Applied Physics Letters, vol. 50, no. 16, pp. 1101-1103. https://doi.org/10.1063/1.97931
Menendez J, Pinczuk A, Valladares JP, Feldman RD, Austin RF. Resonance Raman scattering in CdTe-ZnTe superlattices. Applied Physics Letters. 1987;50(16):1101-1103. https://doi.org/10.1063/1.97931
Menendez, Jose ; Pinczuk, A. ; Valladares, J. P. ; Feldman, R. D. ; Austin, R. F. / Resonance Raman scattering in CdTe-ZnTe superlattices. In: Applied Physics Letters. 1987 ; Vol. 50, No. 16. pp. 1101-1103.
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