Signatures of Γ1－Γ5 mixed-mode polaritons in polarized reflectance spectra of ZnO
Signatures of Γ1－Γ5 mixed-mode polaritons in polarized reflectance spectra of ZnO
复制标题
ZnO偏振反射光谱中1－5混合模式极化激元的特征
DOI：
10.1088/0953-8984/24/41/415801
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发表时间：
2012
期刊：
影响因子：
--
通讯作者：
and T. Sota
中科院分区：
文献类型：
--
作者：
A. Takagi;A. Nakamura;A. Yoshikaie;S. Yoshioka;S. Adachi;S. F. Chichibu;and T. Sota
对ZnO中激发的激子极化子进行了理论和实验研究。研究表明存在 γ 1 和 γ 5 激子同时与电磁波耦合的偏振子，并且在 m 面样品的 k⊥ a 和 E∥ c 配置下测量的偏振反射光谱中观察到它们的特征。理论计算表明，混合模式极化激元由1个γ 1 横模和2个γ 5 纵模组成。还表明签名对价带排序敏感。
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.