Localized magnetoplasmon modes arising from broken translational symmetry in semiconductor superlattices

Details Localized magnetoplasmon modes arising from broken translational symmetry in semiconductor superlattices Localized magnetoplasmon modes arising from broken translational symmetry in semiconductor superlattices

1999-07-09

arxiv.org/abs/cond-mat/9907147v2

J.Phys.:Condens. Matter 12, 2793 (2000).

Physics

Condensed Matter

Revtex file + separate pdf figures

Scientific paper

10.1088/0953-8984/12/12/317

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 at the symmetry breaking layer is lower than the density at the remaining layers. Otherwise a doublet of localized, high-frequency magnetoplasmon-like modes occurs.

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