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Pressure-driven dome-shaped superconductivity and electronic structural evolution in tungsten ditelluride

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  • Xing-Chen Pan

    (National Laboratory of Solid State Microstructures, College of Physics, Nanjing University
    Collaborative Innovation Center of Advanced Microstructures, Nanjing University)

  • Xuliang Chen

    (Collaborative Innovation Center of Advanced Microstructures, Nanjing University
    High Magnetic Field Laboratory, Chinese Academy of Sciences
    Key Laboratory of Materials Physics, Institute of Solid State Physics, Chinese Academy of Sciences)

  • Huimei Liu

    (National Laboratory of Solid State Microstructures, College of Physics, Nanjing University
    Collaborative Innovation Center of Advanced Microstructures, Nanjing University)

  • Yanqing Feng

    (National Laboratory of Solid State Microstructures, College of Physics, Nanjing University
    Collaborative Innovation Center of Advanced Microstructures, Nanjing University)

  • Zhongxia Wei

    (National Laboratory of Solid State Microstructures, College of Physics, Nanjing University
    Collaborative Innovation Center of Advanced Microstructures, Nanjing University)

  • Yonghui Zhou

    (Collaborative Innovation Center of Advanced Microstructures, Nanjing University
    Key Laboratory of Materials Physics, Institute of Solid State Physics, Chinese Academy of Sciences)

  • Zhenhua Chi

    (Collaborative Innovation Center of Advanced Microstructures, Nanjing University
    High Magnetic Field Laboratory, Chinese Academy of Sciences
    Key Laboratory of Materials Physics, Institute of Solid State Physics, Chinese Academy of Sciences)

  • Li Pi

    (Collaborative Innovation Center of Advanced Microstructures, Nanjing University
    High Magnetic Field Laboratory, Chinese Academy of Sciences)

  • Fei Yen

    (Key Laboratory of Materials Physics, Institute of Solid State Physics, Chinese Academy of Sciences)

  • Fengqi Song

    (National Laboratory of Solid State Microstructures, College of Physics, Nanjing University
    Collaborative Innovation Center of Advanced Microstructures, Nanjing University)

  • Xiangang Wan

    (National Laboratory of Solid State Microstructures, College of Physics, Nanjing University
    Collaborative Innovation Center of Advanced Microstructures, Nanjing University)

  • Zhaorong Yang

    (Collaborative Innovation Center of Advanced Microstructures, Nanjing University
    High Magnetic Field Laboratory, Chinese Academy of Sciences
    Key Laboratory of Materials Physics, Institute of Solid State Physics, Chinese Academy of Sciences)

  • Baigeng Wang

    (National Laboratory of Solid State Microstructures, College of Physics, Nanjing University
    Collaborative Innovation Center of Advanced Microstructures, Nanjing University)

  • Guanghou Wang

    (National Laboratory of Solid State Microstructures, College of Physics, Nanjing University
    Collaborative Innovation Center of Advanced Microstructures, Nanjing University)

  • Yuheng Zhang

    (Collaborative Innovation Center of Advanced Microstructures, Nanjing University
    High Magnetic Field Laboratory, Chinese Academy of Sciences)

Abstract

Tungsten ditelluride has attracted intense research interest due to the recent discovery of its large unsaturated magnetoresistance up to 60 T. Motivated by the presence of a small, sensitive Fermi surface of 5d electronic orbitals, we boost the electronic properties by applying a high pressure, and introduce superconductivity successfully. Superconductivity sharply appears at a pressure of 2.5 GPa, rapidly reaching a maximum critical temperature (Tc) of 7 K at around 16.8 GPa, followed by a monotonic decrease in Tc with increasing pressure, thereby exhibiting the typical dome-shaped superconducting phase. From theoretical calculations, we interpret the low-pressure region of the superconducting dome to an enrichment of the density of states at the Fermi level and attribute the high-pressure decrease in Tc to possible structural instability. Thus, tungsten ditelluride may provide a new platform for our understanding of superconductivity phenomena in transition metal dichalcogenides.

Suggested Citation

  • Xing-Chen Pan & Xuliang Chen & Huimei Liu & Yanqing Feng & Zhongxia Wei & Yonghui Zhou & Zhenhua Chi & Li Pi & Fei Yen & Fengqi Song & Xiangang Wan & Zhaorong Yang & Baigeng Wang & Guanghou Wang & Yuh, 2015. "Pressure-driven dome-shaped superconductivity and electronic structural evolution in tungsten ditelluride," Nature Communications, Nature, vol. 6(1), pages 1-6, November.
    • Handle: RePEc:nat:natcom:v:6:y:2015:i:1:d:10.1038_ncomms8805
    DOI: 10.1038/ncomms8805
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    Cited by:

    1. P. T. Yang & Z. Y. Liu & K. Y. Chen & X. L. Liu & X. Zhang & Z. H. Yu & H. Zhang & J. P. Sun & Y. Uwatoko & X. L. Dong & K. Jiang & J. P. Hu & Y. F. Guo & B. S. Wang & J.-G. Cheng, 2022. "Pressured-induced superconducting phase with large upper critical field and concomitant enhancement of antiferromagnetic transition in EuTe2," Nature Communications, Nature, vol. 13(1), pages 1-9, December.

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