Acoustical and optical magnetoplasma excitations in a bilayer electron system

S. V. Tovstonog, L. V. Kulik, I. V. Kukushkin, A. V. Chaplik, J. H. Smet, K. V. Klitzing, D. Schuh, G. Abstreiter

Research output: Contribution to journalArticlepeer-review


The charge-density magnetoexcitations in the bilayer electron system have been studied by means of inelastic light-scattering spectroscopy. Two principal magnetoplasma excitations of different symmetry, acoustical and optical magnetoplasmons, were observed. These principal excitations couple with in-phase and out-of-phase Bernstein modes at nonzero in-plane momentum through the many-body Coulomb interaction. Detailed measurements of the coupled mode energies were performed and compared with theoretical calculations.

Original languageEnglish
Pages (from-to)1-4
Number of pages4
JournalPhysical Review B - Condensed Matter and Materials Physics
Issue number24
StatePublished - 2002


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