Abstract-Magnetic control of Coulomb scattering and terahertz transitions among excitons

J. Bhattacharyya, S. Zybell, F. Eßer, M. Helm, H. Schneider, L. Schneebeli, C. N. Böttge, B. Breddermann, M. Kira, S. W. Koch, A. M. Andrews, and G. Strasser

http://journals.aps.org/prb/abstract/10.1103/PhysRevB.89.125313

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.

DOI: http://dx.doi.org/10.1103/PhysRevB.89.125313

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• Published 31 March 2014
• Received 23 September 2013
• Revised 11 March 2014

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