Strong biexcitonic effects and exciton-exciton correlations in ZnO

K. Hazu*, T. Sota, K. Suzuki, S. Adachi, S. F. Chichibu, G. Cantwell, D. B. Eason, D. C. Reynolds, C. W. Litton

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

25 Citations (Scopus)


We have studied experimentally biexcitonic states of ZnO of rather high quality in the low exciton density limit by means of time-integrated and spectrally-resolved four-wave mixing (FWM). FWM emission signals due to biexcitons consisting of two A-hole excitons (AA biexcitons), an A-hole and a B-hole exciton (AB biexcitons), and two B-hole excitons (BB biexcitons) have been clearly observed according to polarization selection rules. The obtained binding energies for AA, AB, and BB biexcitons are 15.6, 16.6, and 4.7 meV, respectively. A brief discussion is also given on the contribution of biexciton and two-pair continuum resonances to the FWM signal.

Original languageEnglish
Article number033205
Pages (from-to)332051-332054
Number of pages4
JournalPhysical Review B - Condensed Matter and Materials Physics
Issue number3
Publication statusPublished - 2003 Jul

ASJC Scopus subject areas

  • Electronic, Optical and Magnetic Materials
  • Condensed Matter Physics


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