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Tensile-strain induced phonon splitting in diamond

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【Author】 Meifang Pu;Feng Zhang;Shan Liu;Tetsuo Irifune;Li Lei;Institute of Atomic and Molecular Physics, Sichuan University;Geodynamics Research Center, Ehime University;

【通讯作者】雷力;

【机构】 Institute of Atomic and Molecular Physics, Sichuan University； Geodynamics Research Center, Ehime University；

【摘要】 The first-order Raman spectroscopy of diamond exhibits splitting and redshift after the burst of high-pressure(160–200 GPa) and high-temperature(～2000 K). The observed longitudinal optical(LO) and the transverse optical(TO) splitting of Raman phonon is related to the tensile-strain induced activation of the forbidden or silent Raman modes that arise in the proximity of the Brillouin zone center.更多还原

【Abstract】 The first-order Raman spectroscopy of diamond exhibits splitting and redshift after the burst of high-pressure(160–200 GPa) and high-temperature(～2000 K). The observed longitudinal optical(LO) and the transverse optical(TO) splitting of Raman phonon is related to the tensile-strain induced activation of the forbidden or silent Raman modes that arise in the proximity of the Brillouin zone center.更多还原

【关键词】 diamond； tensile-strain； phonon splitting； Brillouin zone；
【Key words】 diamond； tensile-strain； phonon splitting； Brillouin zone；

【基金】 Project supported by the National Natural Science Foundation of China(Grant No.11774247)

【文献出处】 Chinese Physics B ,中国物理B , 编辑部邮箱 ,2019年05期

【分类号】TQ163
【被引频次】1
【下载频次】19

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