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Two-dimensional cavity polaritons under the influence of the perpendicular strong magnetic and electric fields. The gyrotropy effects
KTH, Centres, Nordic Institute for Theoretical Physics NORDITA. Stockholm Univ, S-10691 Stockholm, Sweden.
2015 (English)In: Solid State Communications, ISSN 0038-1098, E-ISSN 1879-2766, Vol. 222, 58-64 p.Article in journal (Refereed) Published
Abstract [en]

The properties of the two-dimensional cavity polaritons subjected to the action of a strong perpendicular magnetic and electric fields, giving rise to the Landau quantization (LQ) of the 2D electrons and holes accompanied by the Rashba spin-orbit coupling, by the Zeeman splitting and by the nonparabolicity of the heavy-hole dispersion law are investigated. We use the method proposed by Rashba (1960) [1] and the obtained results are based on the exact solutions for the eigenfunctions and for the eigenvalues of the Pauli-type Hamilonians with third order chirality terms and nonparabolic dispersion law for heavy-holes and with the first order chirality terms for electrons. The selection rules of the band-to-band optical quantum transitions as well as of the quantum transitions from the ground state of the crystal to the magnetoexciton states depend essentially on the numbers n(e) and n(h) of the LQ levels of the (e-h) pair forming the magnetoexciton. It is shown that the Rabi frequency Omega(R) of the polariton branches and the magnetoexciton oscillator strength f(osc), increase with the magnetic field strength B as Omega(R) similar to root B and f(osc) similar to B. The optical gyrotropy effects may be revealed changing the sign of the photon circular polarization at a given sign of the wave vector longitudinal projection k(z) or equivalently changing the sign of k(z) at the same selected circular polarization.

Place, publisher, year, edition, pages
Pergamon Press, 2015. Vol. 222, 58-64 p.
Keyword [en]
Polariton, Landau quantization, Rashba spin-orbit coupling, Zeeman splitting
National Category
Atom and Molecular Physics and Optics
URN: urn:nbn:se:kth:diva-177409DOI: 10.1016/j.ssc.2015.08.027ISI: 000363819000013ScopusID: 2-s2.0-84942932006OAI: diva2:874512

QC 20151127

Available from: 2015-11-27 Created: 2015-11-20 Last updated: 2015-11-27Bibliographically approved

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Liberman, Mikhail
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