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Record high Tc element superconductivity achieved in titanium

Author

Listed:
  • Changling Zhang

    (Chinese Academy of Sciences
    University of Chinese Academy of Sciences)

  • Xin He

    (Chinese Academy of Sciences
    University of Chinese Academy of Sciences
    Songshan Lake Materials Laboratory)

  • Chang Liu

    (Jilin University)

  • Zhiwen Li

    (Chinese Academy of Sciences
    University of Chinese Academy of Sciences)

  • Ke Lu

    (Chinese Academy of Sciences
    University of Chinese Academy of Sciences)

  • Sijia Zhang

    (Chinese Academy of Sciences)

  • Shaomin Feng

    (Chinese Academy of Sciences)

  • Xiancheng Wang

    (Chinese Academy of Sciences
    University of Chinese Academy of Sciences)

  • Yi Peng

    (Chinese Academy of Sciences
    University of Chinese Academy of Sciences)

  • Youwen Long

    (Chinese Academy of Sciences
    University of Chinese Academy of Sciences
    Songshan Lake Materials Laboratory)

  • Richeng Yu

    (Chinese Academy of Sciences
    University of Chinese Academy of Sciences)

  • Luhong Wang

    (Shanghai Advanced Research in Physical Sciences)

  • Vitali Prakapenka

    (University of Chicago)

  • Stella Chariton

    (University of Chicago)

  • Quan Li

    (Jilin University)

  • Haozhe Liu

    (Center for High Pressure Science & Technology Advanced Research)

  • Changfeng Chen

    (University of Nevada)

  • Changqing Jin

    (Chinese Academy of Sciences
    University of Chinese Academy of Sciences
    Songshan Lake Materials Laboratory)

Abstract

It is challenging to search for high Tc superconductivity (SC) in transition metal elements wherein d electrons are usually not favored by conventional BCS theory. Here we report experimental discovery of surprising SC up to 310 GPa with Tc above 20 K in wide pressure range from 108 GPa to 240 GPa in titanium. The maximum Tconset above 26.2 K and zero resistance Tczero of 21 K are record high values hitherto achieved among element superconductors. The Hc2(0) is estimated to be ∼32 Tesla with coherence length 32 Å. The results show strong s-d transfer and d band dominance, indicating correlation driven contributions to high Tc SC in dense titanium. This finding is in sharp contrast to the theoretical predications based on pristine electron-phonon coupling scenario. The study opens a fresh promising avenue for rational design and discovery of high Tc superconductors among simple materials via pressure tuned unconventional mechanism.

Suggested Citation

  • Changling Zhang & Xin He & Chang Liu & Zhiwen Li & Ke Lu & Sijia Zhang & Shaomin Feng & Xiancheng Wang & Yi Peng & Youwen Long & Richeng Yu & Luhong Wang & Vitali Prakapenka & Stella Chariton & Quan L, 2022. "Record high Tc element superconductivity achieved in titanium," Nature Communications, Nature, vol. 13(1), pages 1-6, December.
    • Handle: RePEc:nat:natcom:v:13:y:2022:i:1:d:10.1038_s41467-022-33077-3
    DOI: 10.1038/s41467-022-33077-3
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    References listed on IDEAS

    as
    1. Zhiwen Li & Xin He & Changling Zhang & Xiancheng Wang & Sijia Zhang & Yating Jia & Shaomin Feng & Ke Lu & Jianfa Zhao & Jun Zhang & Baosen Min & Youwen Long & Richeng Yu & Luhong Wang & Meiyan Ye & Zh, 2022. "Superconductivity above 200 K discovered in superhydrides of calcium," Nature Communications, Nature, vol. 13(1), pages 1-5, December.
    2. Katsuya Shimizu & Hiroto Ishikawa & Daigoroh Takao & Takehiko Yagi & Kiichi Amaya, 2002. "Superconductivity in compressed lithium at 20 K," Nature, Nature, vol. 419(6907), pages 597-599, October.
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