Temperature dependent phonon modes and ionicity of LiGaO2 single crystal |
| |
Authors: | Ma Ji-Yun Fang Xu M Kamran Zhao Hua-Ying Bi Cong-Zhi Zhao Bai-Ru and Qiu Xiang-Gang |
| |
Institution: | National Laboratory for Superconductivity, Institute of
Physics, Chinese Academy of Sciences and Beijing National Laboratory
for
Condensed Matter Physics, Beijing 100190, China |
| |
Abstract: | This paper reports that polarized far-infrared reflectivity
measurements have been done on LiGaO2 single crystal along two
crystalline axes at different temperatures. The temperature
dependent frequencies of the longitudinal and transverse optical
phonon have been obtained from the real part of optical conductivity
and the loss function respectively. A small Drude component is
observed at frequency below 300\,cm$^{ - 1}$ which could arise from
Li ions or oxygen deficiencies. The ionicity of LiGaO2 has been
studied from the analysis of the Born effective charge of different
ions. |
| |
Keywords: | infrared optical conductivity LiGaO2 single crystal phonon |
本文献已被 维普 等数据库收录! |
| 点击此处可从《中国物理 B》浏览原始摘要信息 |
| 点击此处可从《中国物理 B》下载免费的PDF全文 |