Magnetic control of Coulomb scattering and terahertz transitions among excitons

Magnetic control of Coulomb scattering and terahertz transitions among excitons

Time-resolved terahertz quenching studies of the magnetoexcitonic photoluminescence from GaAs/AlGaAs quantum wells are performed. A microscopic theory is developed to analyze the experiments. Detailed experiment-theory comparisons reveal a remarkable magnetic-field controllability of the Coulomb and...

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Veröffentlicht in:Physical review. B, Condensed matter and materials physics Condensed matter and materials physics, 2014-03, Vol.89 (12), Article 125313
Hauptverfasser: Bhattacharyya, J., Zybell, S., Eßer, F., Helm, M., Schneider, H., Schneebeli, L., Böttge, C. N., Breddermann, B., Kira, M., Koch, S. W., Andrews, A. M., Strasser, G.
Format: Artikel
Sprache:eng
Schlagworte:
Aluminum gallium arsenides
Condensed matter
Controllability
Coulomb friction
Excitons
Magnetic control
Quantum wells
Quenching
Scattering
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Zusammenfassung:Time-resolved terahertz quenching studies of the magnetoexcitonic photoluminescence from GaAs/AlGaAs quantum wells are performed. A microscopic theory is developed to analyze the experiments. Detailed experiment-theory comparisons reveal a remarkable magnetic-field controllability of the Coulomb and terahertz interactions in the excitonic system.
ISSN:1098-0121
1550-235X
DOI:10.1103/PhysRevB.89.125313