Frequency-Shifted Polaron Coupling in Ga0.47In0.53As Heterojunctions

R. J. Nicholas*, L. C. Brunel, S. Huant, K. Karrai, J. C. Portal, M. A. Brummell, M. Razeghi, K. Y. Cheng, A. Y. Cho

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

75 Scopus citations


Frequency-dependent cyclotron-resonance measurements are reported on Ga0.47In0.53As-InP and Ga0.47In0.53As-Al0.48In0.52As heterojunctions. Discontinuities in the effective mass occur at two frequencies as a result of resonant polaron coupling with both optic-phonon modes present in the Ga0.47In0.53As alloy. The coupling occurs at the frequencies at the TO phonons, in contrast to measurements on bulk materials. Possible changes in the screening and polarization of the optic-phonon modes are considered.

Original languageEnglish (US)
Pages (from-to)883-886
Number of pages4
JournalPhysical review letters
Issue number8
StatePublished - 1985

ASJC Scopus subject areas

  • Physics and Astronomy(all)


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