Cyclotron Resonance in a Two-dimensional Electron Gas with Long-range Disorder
نویسنده
چکیده
We show that the the cyclotron resonance in a two-dimensional electron gas has nontrivial properties if the correlation length of the disorder is larger than the de Broglie wavelength: (a) the linewidth depends di erently on the magnetic eld in strong, intermediate, and weak magnetic eld regimes (b) at the transition from the intermediate to the weak elds the linewidth suddenly collapses due to an explosive growth of the fraction of electrons with the di usive classical motion and a resulting very large quantum localization length.
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Cyclotron Resonance in a Two-Dimensional Electron Gas with Long-Range Randomness
We show that the cyclotron resonance in a two-dimensional electron gas has nontrivial properties if the correlation length of the disorder is larger than the Fermi wavelength: (a) The line shape assumes three different forms in strong, intermediate, and weak magnetic fields. (b) The linewidth collapses at the transition from the intermediate to the weak fields via the motional narrowing mechani...
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