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Magneto-optical probing of weak disorder in a two-dimensional hole gas
Leszek Bryja, Arkadiusz Wojs, Jan Misiewicz +3
In two-beam magneto-photoluminescence spectra of a two-dimensional valence hole gas we identify the three-level energy spectrum of a free positive trion with a field-induced single…
Evidence for excitonic polarons in InAs/GaAs quantum dots
Vanessa Preisler, Thomas Grange, Robson Ferreira +5
We investigate the interband transitions in several ensembles of self-assembled InAs/GaAs quantum dots by using photoluminescence excitation spectroscopy under strong magnetic fiel…
Effect of free carriers and impurities on density of states and optical spectra of two-dimensional magneto-excitons
Anna Gladysiewicz, Leszek Bryja, Arkadiusz Wojs +1
Density of states (DOS) and absorption spectrum of weakly doped, narrow quantum wells in high magnetic fields are calculated by realistic exact diagonalization. The systems contain…
Frequency quenching of microwave induced resistance oscillations in a high mobility two-dimensional electron gas
S. A. Studenikin, A. S. Sachrajda, J. A. Gupta +8
The frequency dependence of microwave-induced resistance oscillations (MIROs) has been studied experimentally in high-mobility electron GaAs/AlGaAs structures to explore the limits…