, 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


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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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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