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Luminescence polarization and spontaneous lowering of symmetry caused by magnetic-polaron formation in semimagnetic-semiconductor quantum wells

  • Low-Dimensional Systems and Surface Physics
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Abstract

An experimental and theoretical study of the magnetic polaron states of two-dimensional excitons in quantum wells based on semimagnetic semiconductors (Cd,Mn)Te is reported. It is shown that magnetic-polaron formation in in-plane magnetic fields leads to a lowering of the system symmetry, provided the fields are not too strong. The magnetic moment of the polaron thus formed is not parallel to the external magnetic field and contains a component normal to the quantum-well plane. This spontaneous lowering of the symmetry results in a change of the polarization characteristics of the luminescence from magnetic polaron states and in a weakening (compared to the three-dimensional case) in the efficiency of magnetic field-induced polaron suppression.

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Authors and Affiliations

  1. Physikalisches Institut der Universität Würzburg, 97074, Würzburg, Germany

    G. Mackh, B. Kuhn-Heinrich, W. Ossau, A. Waag, G. Landwehr & D. R. Yakovlev

  2. A. F. Ioffe Physicotechnical Institute, Russian Academy of Sciences, 194021, St. Petersburg, Russia

    I. A. Merkulov, K. V. Kavokin & D. R. Yakovlev

Authors
  1. I. A. Merkulov
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  2. K. V. Kavokin
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  3. G. Mackh
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  4. B. Kuhn-Heinrich
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  5. W. Ossau
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  6. A. Waag
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  7. G. Landwehr
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  8. D. R. Yakovlev
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Additional information

Fiz. Tverd. Tela (St. Petersburg) 39, 2079–2084 (November 1997)

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Merkulov, I.A., Kavokin, K.V., Mackh, G. et al. Luminescence polarization and spontaneous lowering of symmetry caused by magnetic-polaron formation in semimagnetic-semiconductor quantum wells. Phys. Solid State 39, 1859–1863 (1997). https://doi.org/10.1134/1.1130215

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  • DOI: https://doi.org/10.1134/1.1130215

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