Localized magnetoplasmon modes arising from broken translational symmetry in semiconductor superlattices

John H. Reina, Juan C. Granada, Neil F. Johnson

Research output: Contribution to journalArticlepeer-review

Abstract

The electromagnetic propagator associated with the localized collective magnetoplasmon excitations in a semiconductor superlattice with broken translational symmetry is calculated analytically within linear response theory. We discuss the properties of these collective excitations in both radiative and non-radiative regimes of the electromagnetic spectra. We find that low-frequency retarded modes arise when the surface density of carriers ηd at the symmetry-breaking layer is lower than the density η0 at the remaining layers. Otherwise (ηd > η0) a doublet of localized, high-frequency magnetoplasmon-like modes occurs. The corresponding dispersion law and power spectrum of these modes are shown.

Original languageEnglish (US)
Pages (from-to)2793-2804
Number of pages12
JournalJournal of Physics Condensed Matter
Volume12
Issue number12
DOIs
StatePublished - Mar 27 2000

ASJC Scopus subject areas

  • Materials Science(all)
  • Condensed Matter Physics

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