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VOLUME 74 (2001) | ISSUE 5 | PAGE 300
Cyclotron spin-wave in the 2D electron system
PACS: 73.40.Hm
Abstract
The cyclotron spin-wave mode of a two-dimensional electron system have been investigated by inelastic light scattering. It is observed at small electron filling factors, \nu \sim 0.1, when the electron system is spin-depolarized. As long as the electron system becomes fully spin-polarized (ν > 0.2) the cyclotron spin-wave disappears from the inelastic light scattering spectra. It reenters at electron filling factors ν > 1. Over the range of electron filling factors of 1 < ν < 2 the cyclotron spin-wave energy is insensitive to both the experimentally accessible in-plane momenta and the electron concentration, whereas its inelastic light scattering efficiency is strongly influenced by the spin polarization of the electron system.