Kirpichev, V. E., Kulik, L. V., Kukushkin, I. V., Klitzing, Klaus von, Eberl, Karl and Wegscheider, Werner
(1999)
Direct observation of the intersubband Bernstein modes: Many-body coupling with spin- and charge-density excitations.
Physical Review B 59 (20), R12751-R12754.
Date of publication of this fulltext: 30 Nov 2009 13:05at publisher (via DOI)
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 ...
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 and spin density excitations through many-body Coulomb interaction, and the coupling strength is governed by the in-plane momentum. Detailed measurements of the coupling strength dispersion were performed and compared with theoretical simulations.
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