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Polaron effects on excitons in parabolic quantum wells: fractional-dimension variational approach

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  • Z. P. Wang
  • X. X. Liang
  • X. Wang

Abstract

Polaron effects on excitons in parabolic quantum wells are studied theoretically by using a variational approach with the so-called fractional dimension model. The numerical results for the exciton binding energies and longitudinal-optical phonon contributions in GaAs/Al 0.3 Ga 0.7 As parabolic quantum well structures are obtained as functions of the well width. It is shown that the exciton binding energies are obviously reduced by the electron (hole)-phonon interaction and the polaron effects are un-negligible. The results demonstrate that the fractional-dimension variational theory is effectual in the investigations of excitonic polaron problems in parabolic quantum wells. Copyright EDP Sciences/Società Italiana di Fisica/Springer-Verlag 2007

Suggested Citation

  • Z. P. Wang & X. X. Liang & X. Wang, 2007. "Polaron effects on excitons in parabolic quantum wells: fractional-dimension variational approach," The European Physical Journal B: Condensed Matter and Complex Systems, Springer;EDP Sciences, vol. 59(1), pages 41-46, September.
    • Handle: RePEc:spr:eurphb:v:59:y:2007:i:1:p:41-46
    DOI: 10.1140/epjb/e2007-00265-5
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