Signatures of Γ 15 mixed-mode polaritons in polarized reflectance spectra of ZnO

Ayako Takagi, Atsushi Nakamura, Akira Yoshikaie, So Ichiro Yoshioka, Satoru Adachi, Shigefusa F. Chichibu, Takayuki Sota

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4 Citations (Scopus)


Theoretical and experimental studies were carried out on exciton-polaritons excited in ZnO. Polaritons in which both Γ 1 and Γ 5 excitons couple to electromagnetic waves simultaneously are shown to exist, and their signatures are observed in polarized reflectance spectra measured under k ⊥ a and E∥c configurations for an m-plane sample. Theoretical calculations reveal that the mixed-mode polaritons consist of one Γ 1 transverse mode and two Γ 5 longitudinal modes. It is also shown that the signatures are sensitive to the valence band ordering.

Original languageEnglish
Article number415801
JournalJournal of Physics Condensed Matter
Issue number41
Publication statusPublished - 2012 Oct 17

ASJC Scopus subject areas

  • Materials Science(all)
  • Condensed Matter Physics


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