Relaxation of inter-Landau-level excitations in the quantised Hall regime
β Scribed by S Dickmann; Y Levinson
- Publisher
- Elsevier Science
- Year
- 1999
- Tongue
- English
- Weight
- 70 KB
- Volume
- 5
- Category
- Article
- ISSN
- 1386-9477
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β¦ Synopsis
Relaxation of collective plasmon inter-Landau-level excitation is determined by emission of LO-phonons or by Auger-like processes when this emission is suppressed o the magneto-phonon resonance conditions. The decay of "one-cyclotron" magneto-plasmons with wave vectors near the roton minimum is studied under the condition of ΓΏlling = 1. Some features of this relaxation should be helpful for the experimental detection of the magnetorotons in a strongly correlated 2D electron gas (2DEG).
π SIMILAR VOLUMES
Resonant inelastic light scattering experiments access the low lying excitations of electron liquids in the fractional quantum Hall regime in the range 2=5 $ n $ 1=3: Modes associated with changes in the charge and spin degrees of freedom are measured. Spectra of spin reversed excitations at filling
Magnetorotons in the dispersion curves of collective gap excitation modes of fractional quantum Hall liquids are measured by resonant inelastic light scattering. Two deep magnetoroton minima are observed at = 2 5 , while a single deep minimum is resolved at = 1 3 . The results support Chern-Simons a
Two-dimensional electronic systems placed in a high magnetic field and edge potentials with the filling tactors corresponding to the plateau in the quantum Hall effect regime are investigated. It is shown that only one type of edge excitations (EE) exist in the system with the frequency governed by