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Direct observation of the intersubband Bernstein modes: Many-body coupling with spin- and charge-density excitations

DOI to cite this document:
10.5283/epub.10978
Kirpichev, V. E. ; Kulik, L. V. ; Kukushkin, I. V. ; Klitzing, Klaus von ; Eberl, Karl ; Wegscheider, Werner
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Date of publication of this fulltext: 30 Nov 2009 13:05


Abstract

The spectrum of collective intersubband magneto excitations in a quasi-two-dimensional electron system confined in a single quantum well has been studied by inelastic light scattering spectroscopy. Intersubband Bernstein modes with a change of the Landau level index up to three were observed in a perpendicular magnetic field. It is demonstrated that Bernstein modes couple with intersubband charge ...

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