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

Research output: Contribution to journalArticle

3 Citations (Scopus)

Abstract

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
Volume24
Issue number41
DOIs
Publication statusPublished - 2012 Oct 17

ASJC Scopus subject areas

  • Materials Science(all)
  • Condensed Matter Physics

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