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Elucidation of “phase difference” in Raman tensor formalism

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Abstract

The so-called “phase difference” is commonly introduced as a phenomenological parameter in Raman tensor theory, so as to fit the experimental data well. Although phase difference is widely recognized as an intrinsic property of crystals, its physics still remains ambiguous. Recently, Kranert et al. have presented a new formalism to explain the origin of phase difference theoretically. Here, we systematically conducted experimental research with polar phonons in wurtzite crystals, the results of which strongly suggest that the phase difference should be predetermined in a Raman tensor, rather than be treated as Raman tensor elements traditionally or as an intrinsic property. On the grounds of pinpointing existing logical flaws in Raman tensor study, we provide a logically clear paradigm.

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DOI:10.1364/prj.6.000709

基金项目:National Natural Science Foundation of China (NSFC)10.13039/501100001809 (61604178, 61427901, 91333207, U1505252).

收稿日期:2018-03-22

录用日期:2018-05-02

网络出版日期:2018-05-14

作者单位    点击查看

Wei Zheng:State Key Laboratory of Optoelectronic Materials and Technologies, School of Materials, Sun Yat-sen University, Guangzhou 510275, China
Jingshen Yan:State Key Laboratory of Optoelectronic Materials and Technologies, School of Materials, Sun Yat-sen University, Guangzhou 510275, China
Fadi Li:Key Laboratory of Materials Physics, Institute of Solid State Physics, Chinese Academy of Sciences, Hefei 230031, China
Feng Huang:State Key Laboratory of Optoelectronic Materials and Technologies, School of Materials, Sun Yat-sen University, Guangzhou 510275, China

联系人作者:Feng Huang(huangfeng@mail.sysu.edu.cn)

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引用该论文

Wei Zheng, Jingshen Yan, Fadi Li, and Feng Huang, "Elucidation of “phase difference” in Raman tensor formalism," Photonics Research 6(7), 709-712 (2018)

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