中国物理B ›› 2019, Vol. 28 ›› Issue (5): 53102-053102.doi: 10.1088/1674-1056/28/5/053102

• SPECIAL TOPIC—Recent advances in thermoelectric materials and devices • 上一篇    下一篇

Tensile-strain induced phonon splitting in diamond

Meifang Pu(蒲梅芳), Feng Zhang(张峰), Shan Liu(刘珊), Tetsuo Irifune(入舩徹男), Li Lei(雷力)   

  1. 1 Institute of Atomic and Molecular Physics, Sichuan University, Chengdu 610065, China;
    2 Geodynamics Research Center, Ehime University, Matsuyama 790-8577, Japan
  • 收稿日期:2019-01-21 修回日期:2019-03-22 出版日期:2019-05-05 发布日期:2019-05-05
  • 通讯作者: Li Lei E-mail:lei@scu.edu.cn
  • 基金资助:

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

Tensile-strain induced phonon splitting in diamond

Meifang Pu(蒲梅芳)1, Feng Zhang(张峰)1, Shan Liu(刘珊)1, Tetsuo Irifune(入舩徹男)2, Li Lei(雷力)1   

  1. 1 Institute of Atomic and Molecular Physics, Sichuan University, Chengdu 610065, China;
    2 Geodynamics Research Center, Ehime University, Matsuyama 790-8577, Japan
  • Received:2019-01-21 Revised:2019-03-22 Online:2019-05-05 Published:2019-05-05
  • Contact: Li Lei E-mail:lei@scu.edu.cn
  • Supported by:

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

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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.

关键词: diamond, tensile-strain, phonon splitting, Brillouin zone

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.

Key words: diamond, tensile-strain, phonon splitting, Brillouin zone

中图分类号:  (Electronic structure and bonding characteristics)

  • 31.15.ae
61.43.-j (Disordered solids) 62.20.M- (Structural failure of materials)