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Volume 30 Issue 5
Aug 2016
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Chinese Journal of High Pressure Physics  > 2016  >  30(5): 369-374.
LI Dong-Fei, ZHANG Ke-Wei, LI Zuo-Wei, LIU Cheng-Zhi, GUO Rui, SUN Cheng-Lin, LI Hai-Bo. High Pressure Raman Investigation of Td-WTe2 Bulk Single Crystal[J]. Chinese Journal of High Pressure Physics, 2016, 30(5): 369-374. doi: 10.11858/gywlxb.2016.05.004
Citation: LI Dong-Fei, ZHANG Ke-Wei, LI Zuo-Wei, LIU Cheng-Zhi, GUO Rui, SUN Cheng-Lin, LI Hai-Bo. High Pressure Raman Investigation of Td-WTe2 Bulk Single Crystal[J]. Chinese Journal of High Pressure Physics, 2016, 30(5): 369-374. doi: 10.11858/gywlxb.2016.05.004
shu

High Pressure Raman Investigation of Td-WTe2 Bulk Single Crystal

doi: 10.11858/gywlxb.2016.05.004
  • 1.

    Key Laboratory of Functional Materials Physics and Chemistry of the Ministry of Education, Jilin Normal University, Changchun 130103, China

  • 2.

    State Key Laboratory of Superhard Materials, College of Physics, Jilin University, Changchun 130012, China

  • 3.

    Changchun Observatory, National Astronomical Observatories, Chinese Academy of Sciences, Changchun 130117, China

  • Received Date: 11 Jan 2016
  • Rev Recd Date: 24 Feb 2016
    Abstract
  • Raman spectra of Td-WTe2 bulk single crystal sample with the incident laser (532 nm) beam direction parallel to the c axis were obtained under pressures up to 17 GPa.Based on the first-principles calculations, we analyzed the Raman spectrum of Td-WTe2 bulk single crystal obtained at ambient temperature.The results indicated that the effect of pressure on the out-of-plane vibrational modes is much stronger than the in-plane vibrational modes, except for the 79.0 cm-1 vibrational mode which is assigned to the out-of-plane vibrational mode.The vibrational mode located at 79.0 cm-1 is less sensitive to pressure than the other vibrational modes.Moreover, we gave a detailed analysis and explanation for the effect of pressure on the vibration modes of Td-WTe2 bulk single crystal.

     

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