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SM ISO690:2012 HAKIOGLU, Tugrul, LIBERMAN, Michael, MOSKALENKO, Sveatoslav, PODLESNY, Igor. Optical properties of the two-dimensional magnetoexcitons under the influence of the Rashba spin-orbit coupling. In: Proceedings of SPIE - The International Society for Optical Engineering, Ed. 1, 23-26 august 2010, Kazan. Bellingham, Washington: SPIE, 2011, Vol.7993, pp. 1-9. ISBN 9780819485663. ISSN 0277786X. DOI: https://doi.org/10.1117/12.882290 |
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Proceedings of SPIE - The International Society for Optical Engineering Vol.7993, 2011 |
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Conferința "Coherent and Nonlinear Optics and Lasers, Applications, and Technologies" 1, Kazan, Rusia, 23-26 august 2010 | ||||||
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DOI:https://doi.org/10.1117/12.882290 | ||||||
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The influence of the Rashba spin-orbit coupling on the two-dimensional (2D) electrons and holes in a strong perpendicular magnetic field leads to different results of the Landau quantization in different spin projections. In Landau gauge the unidimensional wave vector describing the free motion in one in-plane direction is the same for both spin projections, whereas the numbers of the Landau quantization levels are different. For electron in s-type conduction band they differ by one, as was established earlier by Rashba1, whereas for heavy holes in p-type valence band influenced by the 2D symmetry of the layer they differ by three. There are two lowest spin-splitted Landau levels for electrons as well as two lowest for holes. They give rise to four lowest energy levels of the 2D magnetoexcitons. It is shown that two of them are dipole-active in band-to-band quantum transitions, one is quadrupole-active and the fourth is forbidden. The optical orientation under the influence of the circularly polarized light leads to optical alignment of the magnetoexcitons with different orbital momentum projections on the direction of the external magnetic field |
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Cuvinte-cheie Landau quantization, magnetoexcitons, Rashba spin-orbit splitting |
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