Optical investigations of pressure-induced phases in type-II Weyl semi-metal WTe<sub>2</sub>

ORAL

Abstract

WTe2 crystalizes in the Td structure at an ambient pressure, and undergoes a structural phase transition to the 1T’ structure under the application of pressure. We investigated pressure-induced variation of structural and electronic phases by optical methods. Whereas we observed several clear signatures of pressure-induced phase transitions consistently with previous reports, we could characterize the intermediate state existing between two structural phases of Td and 1T’, which would be related to the pressured-induced superconductivity observed in WTe2.

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Presenters

  • Hwiin Ju

    • Gwangju Institute of Science and Technology

Authors

  • Hwiin Ju

    • Gwangju Institute of Science and Technology

  • Duk Hyun Lee

    • Korea Research Inst of Standards and Science (KRISS)
    • Korea Research Institute of Standards and Science, Daejeon 34113, Republic of Korea

  • Suyong Jung

    • Korea Research Inst of Standards and Science (KRISS)

  • Jongseok Lee

    • Gwangju Institute of Science and Technology
    • Department of Physics and Photon Science, Gwangju Institute of Science and Technology (GIST)
    • Gwangju Institute of Science and Technololgy