Terahertz-induced effects on excitons in magnetic field
Terahertz-induced effects on excitons in magnetic field
Böttge, C. N.; Breddermann, B.; Schneebeli, L.; Kira, M.; Koch, S. W.; Bhattacharyya, J.; Schneider, H.; Helm, M.
Abstract
Terahertz-induced intra-exciton transitions are studied in semiconductor quantum-well systems under the influence of a constant magnetic field. A systematic description is developed to include carrier–carrier interactions, terahertz transitions, and magnetic-field effects to the exciton-correlation dynamics. When a magnetic field is present, the exciton states and energies are changed directly and parametrically via the center-of-mass momentum of excitons. The numerical results show that both effects influence the terahertz spectroscopy. Especially, the transition between 1s- and 2p-exciton states is shown to depend strongly on both magnetic field and center-of-mass momentum.
Keywords: semiconductor quantum well; exciton; terahertz
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Physica Status Solidi (C) 10(2013)9, 1218-1221
DOI: 10.1002/pssc.201200702
Cited 2 times in Scopus
Permalink: https://www.hzdr.de/publications/Publ-19277