The Influence of the Rashba spin orbit coupling on the two dimensional magnetoexcitons

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dc.citation.epage345405-13en_US
dc.citation.issueNumber34en_US
dc.citation.spage345405-1en_US
dc.citation.volumeNumber23en_US
dc.contributor.authorHakioglu, T.en_US
dc.contributor.authorLiberman, M. A.en_US
dc.contributor.authorMoskalenko, S. A.en_US
dc.contributor.authorPodlesny, I. V.en_US
dc.date.accessioned2015-07-28T12:06:10Z
dc.date.available2015-07-28T12:06:10Z
dc.date.issued2011en_US
dc.departmentDepartment of Physicsen_US
dc.description.abstractThe influence of the Rashba spin-orbit coupling (RSOC) on the two-dimensional (2D) electrons and holes in a strong perpendicular magnetic field leads to different results for the Landau quantization in different spin projections. In the 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 Landau quantization levels are different. For an electron in an s-type conduction band they differ by one, as was established earlier by Rashba (1960 Fiz. Tverd. Tela 2 1224), whereas for heavy holes in a p-type valence band influenced by the 2D symmetry of the layer they differ by three. The shifts and the rearrangements of the 2D hole Landau quantization levels on the energy scale are much larger in comparison with the case of conduction electron Landau levels. This is due to the strong influence of the magnetic field on the RSOC parameter. At sufficiently large values of this parameter the shifts and rearrangements are comparable with the hole cyclotron energy. There are two lowest spin-split Landau levels for electrons as well as four lowest ones for holes in the case of small RSOC parameters. They give rise to eight lowest energy bands of the 2D magnetoexcitons, as well as of the band-to-band quantum transitions. It is shown that three of them are dipole-active, three are quadrupole-active and two are forbidden. The optical orientation under the influence of circularly polarized light leads to optical alignment of the magnetoexcitons with different orbital momentum projections in the direction of the external magnetic field.en_US
dc.identifier.doi10.1088/0953-8984/23/34/345405en_US
dc.identifier.issn0953-8984
dc.identifier.urihttp://hdl.handle.net/11693/13400
dc.language.isoEnglishen_US
dc.publisherIOP Publishingen_US
dc.relation.isversionofhttp://dx.doi.org/10.1088/0953-8984/23/34/345405en_US
dc.source.titleJournal of Physics: Condensed Matteren_US
dc.subjectLandau-levelsen_US
dc.subjectQuantum-wellsen_US
dc.subjectElectron-gasen_US
dc.subjectCyclotronen_US
dc.subjectGrapheneen_US
dc.subjectResonancesen_US
dc.subjectPhaseen_US
dc.subjectHolesen_US
dc.titleThe Influence of the Rashba spin orbit coupling on the two dimensional magnetoexcitonsen_US
dc.typeArticleen_US

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