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Valence-band mixing in neutral, charged, and Mn-doped self-assembled quantum dots

Y. Léger, L. Besombes, L. Maingault, and H. Mariette

  • Institut Néel, CNRS and Université Joseph Fourier, 25 avenue des Martyrs, BP 166, 38042, Grenoble cedex 9, France

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Phys. Rev. B 76, 045331 – Published 24 July, 2007

DOI: https://doi.org/10.1103/PhysRevB.76.045331

Abstract

We analyze the optical emission of single II-VI quantum dots containing 0 or 1 magnetic atom (manganese) and a controlled number of carriers (0, ±1 electron). The emission of these quantum dots presents a large degree of linear polarization. This linear polarization is attributed to a valence-band mixing and we show that in nonmagnetic quantum dots combining both a shape anisotropy and an anisotropic in-plane strain distribution, the linear polarization direction of the exciton are controlled by an interplay between valence-band mixing and electron-hole (e-h) exchange interaction. Similarly, under strong transverse magnetic field, the direction of the linearly polarized emission of the charged excitons is simultaneously controlled by the valence-band mixing and the direction of the magnetic field. In quantum dots containing a Mn atom, the valence-band mixing allows simultaneous hole-Mn spin flips coupling bright and dark excitons. These spin flips are responsible for linearly polarized transitions in the emission of the charged excitons at zero magnetic field.

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References (34)

  1. L. Besombes, Y. Léger, L. Maingault, D. Ferrand, H. Mariette, and J. Cibert, Phys. Rev. Lett. 93, 207403 (2004).
  2. M. Bayer, A. Kuther, A. Forchel, A. Gorbunov, V. B. Timofeev, F. Schafer, J. P. Reithmaier, T. L. Reinecke, and S. N. Walck, Phys. Rev. Lett. 82, 1748 (1999).
  3. A. V. Koudinov, I. A. Akimov, Yu. G. Kusrayev, and F. Henneberger, Phys. Rev. B 70, 241305(R) (2004).
  4. F. Tinjod, B. Gilles, S. Moehl, K. Kheng, and H. Mariette, Appl. Phys. Lett. 82, 4340 (2003).
  5. L. Besombes, Y. Léger, L. Maingault, D. Ferrand, C. Bougerol, H. Mariette, and J. Cibert, Acta Phys. Pol. A 108, 527 (2005).
  6. L. Maingault, L. Besombes, Y. Léger, and H. Mariette, Appl. Phys. Lett. 89, 193106 (2006).
  7. S. Bhunia and D. N. Bose, J. Appl. Phys. 87, 2931 (2000).
  8. W. Maslana, P. Kossacki, M. Bertolini, H. Boukari, D. Ferrand, S. Tatarenko, J. Cibert, and J. A. Gaj, Appl. Phys. Lett. 82, 1875 (2003).
  9. J. Seufert, M. Rambach, G. Bacher, A. Forchel, T. Passov, and D. Hommel, Appl. Phys. Lett. 82, 3946 (2003).
  10. A. Vasanelli, R. Ferreira, and G. Bastard, Phys. Rev. Lett. 89, 216804 (2002).
  11. A. Hartmann, Y. Ducommun, E. Kapon, U. Hohenester, and E. Molinari, Phys. Rev. Lett. 84, 5648 (2000).
  12. U. Bockelmann and G. Bastard, Phys. Rev. B 45, 1688 (1992).
  13. T. Tanaka, J. Singh, Y. Arakawa, and P. Bhattacharya, Appl. Phys. Lett. 62, 756 (1993).
  14. S. Cortez, O. Krebs, and P. Voisin, J. Vac. Sci. Technol. B 18, 2232 (2000).
  15. J. Allègre, B. Gil, J. Calatayud, and H. Mathieu, J. Cryst. Growth 101, 603 (1990).

  16. This linear polarization is not due to the aperture shape in our experiment (Ref. [17]). As a matter of fact, it is quite ordinary to find in the same aperture two emission lines, linearly polarized along two different directions.

  17. R. Gordon, A. G. Brolo, A. McKinnon, A. Rajora, B. Leathem, and K. L. Kavanagh, Phys. Rev. Lett. 92, 037401 (2004).
  18. I. Favero, G. Cassabois, C. Voisin, C. Delalande, Ph. Roussignol, R. Ferreira, C. Couteau, J. P. Poizat, and J. M. Gérard, Phys. Rev. B 71, 233304 (2005).
  19. T. Flissikowski, A. Hundt, M. Lowisch, M. Rabe, and F. Henneberger, Phys. Rev. Lett. 86, 3172 (2001).
  20. M. Tadić, F. M. Peeters and K. L. Janssens, Phys. Rev. B 65, 165333 (2002).
  21. Y. Chen, B. Gil, P. Lefebvre, H. Mathieu, T. Fukunaga, and H. Nakashima, Excitons in Confined Systems, Proceedings in Physics 25 (Springer, New York, 1988).
  22. A. Franceschetti, L. W. Wang, H. Fu, and A. Zunger, Phys. Rev. B 58, R13367 (1998).
  23. S. V. Goupalov and E. L. Ivchenko, Phys. Solid State 43, 1791 (2001).
  24. S. V. Goupalov, Phys. Rev. B 74, 113305 (2006).
  25. B. Patton, W. Langbein, and U. Woggon, Phys. Rev. B 68, 125316 (2003).
  26. M. Bayer, G. Ortner, O. Stern, A. Kuther, A. A. Gorbunov, A. Forchel, P. Hawrylak, S. Fafard, K. Hinzer, T. L. Reinecke, S. N. Walck, J. P. Reithmaier, F. Klopf, and F. Schäfer, Phys. Rev. B 65, 195315 (2002).
  27. Y. Léger, L. Besombes, L. Maingault, D. Ferrand, and H. Mariette, Phys. Rev. B 72, 241309(R) (2005).
  28. Y. Léger, L. Besombes, J. Fernández-Rossier, L. Maingault, and H. Mariette, Phys. Rev. Lett. 97, 107401 (2006).
  29. D. N. Krizhanovskii, A. Ebbens, A. I. Tartakovskii, F. Pulizzi, T. Wright, M. S. Skolnick, and M. Hopkinson, Phys. Rev. B 72, 161312(R) (2005).
  30. U. Rössler, S. Jorda, and D. Broido, Solid State Commun. 73, 209 (1990).
  31. E. L. Ivchenko, Optical Spectroscopy of Semiconductor Nanotstructures (Springer, New York, 2004).
  32. Y. Léger, L. Besombes, L. Maingault, D. Ferrand, and H. Mariette, Phys. Rev. Lett. 95, 047403 (2005).
  33. F. Long, W. E. Hagston, P. Harrison, and T. Stirner, J. Appl. Phys. 82, 3414 (1997).
  34. A. Messiah, Mécanique Quantique (Dunod, Paris, 1959).

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Phys. Rev. B 76, 045331– Published 24 July, 2007
  • Received 12 February 2007

© 2007 American Physical Society

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