Magneto-optical experiments on GaAAAs modulation-doped single quantum wells

F. Iikawa, M. Abbade, J. Brum, A. Bernussi, R. Pereira

Research output: Contribution to journalArticlepeer-review

5 Scopus citations


We present magneto-optical studies on a high-density two-dimensional electron gas system. Low-temperature magnetoluminescence spectra of a GaAs/(Formula presented)(Formula presented)As/(Formula presented)(Formula presented)As modulation-doped single-quantum-well structure reveal several features related to Landau-level transitions and corresponding LO-phonon satellite emissions. The coupling between these two families of transitions results in clearly identifiable resonant magnetopolaron effects. The observed anticrossing splitting energy value agrees quantitatively with theoretical models that take into account the presence of the electron gas. Additionally, the peak intensity of transitions at the Fermi energy exhibits a pronounced oscillatory behavior with magnetic fields. These oscillations are attributed to even filling factors.

Original languageEnglish
Pages (from-to)11360-11364
Number of pages5
JournalPhysical Review B - Condensed Matter and Materials Physics
Issue number16
StatePublished - 1996


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