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Semiconductors

, Volume 52, Issue 5, pp 554–557 | Cite as

Biexciton Binding Energy in Spherical Quantum Dots with Γ8 Valence Band

  • A. A. Golovatenko
  • M. A. Semina
  • A. V. Rodina
  • T. V. Shubina
XXV International Symposium “Nanostructures: Physics and Technology”, Saint Petersburg, Russia, June 26–30, 2017. Excitons in Nanostructures
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Abstract

The biexciton binding energy in spherical CdSe/ZnSe quantum dots is calculated variationally in the framework of kp-perturbation theory. Smooth and abrupt confining potentials with the same localization area of carriers are compared for two limiting cases of light hole to heavy hole mass ratio β = m lh /m hh : β = 1 and β = 0. Accounting for correlations between carriers results in their polarized configuration and significantly increases the biexciton binding energy in comparison with the first order perturbation theory. For β = 0 in smooth confining potentials there are three nearby biexciton states separated by small energy gap between 1S3/2 and 1P3/2 hole states.

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References

  1. 1.
    A. Klochikhin, A. Reznitsky, B. Dal Don, et al., Phys. Rev. B 69, 085308 (2004).ADSCrossRefGoogle Scholar
  2. 2.
    T. V. Shubina, A. V. Rodina, M. A. Semina, et al., Phys. Status Solidi 253, 1485 (2016).CrossRefGoogle Scholar
  3. 3.
    V. D. Kulakovskii, G. Bacher, R. Weigand, et al., Phys. Rev. Lett. 82, 1780 (1999).ADSCrossRefGoogle Scholar
  4. 4.
    M. Müller et al., Nat. Photon. (2014).Google Scholar
  5. 5.
    M. Califano, A. Franceschetti, and A. Zunger, Phys. Rev. B 75, 115401 (2007).ADSCrossRefGoogle Scholar
  6. 6.
    A. A. Golovatenko, M. A. Semina, and A. V. Rodina, Phys. Solid State 59, 1215 (2017).ADSCrossRefGoogle Scholar
  7. 7.
    B. L. Gelmont and M. I. Dyakonov, Sov. Phys. Semicond. 5, 905 (1971).Google Scholar
  8. 8.
    A. I. Ekimov, F. Hache, M. C. Schanne-Klein, et al., J. Opt. Soc. Am. B 10, 100 (1993).ADSCrossRefGoogle Scholar
  9. 9.
    M. A. Semina, A. A. Golovatenko, and A. V. Rodina, Phys. Rev. B 93, 045409 (2016).ADSCrossRefGoogle Scholar

Copyright information

© Pleiades Publishing, Ltd. 2018

Authors and Affiliations

  • A. A. Golovatenko
    • 1
  • M. A. Semina
    • 1
  • A. V. Rodina
    • 1
  • T. V. Shubina
    • 1
  1. 1.Ioffe InstituteSt. PetersburgRussia

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