Collective cyclotron resonance in a quasi-three-dimensional electron gas

K. Karraï, X. Ying, H. D. Drew, M. Shayegan

Research output: Contribution to journalArticlepeer-review

45 Scopus citations


Far-infrared magnetotransmission measurements are carried out on modulation-doped wide parabolic AlxGa1-xAs quantum wells. We report the first observation of plasma-shifted cyclotron resonance in a semiconductor space-charge layer. The bulk carrier density deduced from the plasma frequency is found to be independent of the areal electron density. The homogeneity of the three-dimensional electron density is probed using this new resonant mode.

Original languageEnglish (US)
Pages (from-to)12020-12023
Number of pages4
JournalPhysical Review B
Issue number17
StatePublished - 1989

All Science Journal Classification (ASJC) codes

  • Condensed Matter Physics


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