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Testing electron–phonon coupling for the superconductivity in kagome metal CsV3Sb5

Author

Listed:
  • Yigui Zhong

    (The University of Tokyo)

  • Shaozhi Li

    (Oak Ridge National Laboratory)

  • Hongxiong Liu

    (Chinese Academy of Sciences)

  • Yuyang Dong

    (The University of Tokyo)

  • Kohei Aido

    (The University of Tokyo)

  • Yosuke Arai

    (The University of Tokyo)

  • Haoxiang Li

    (Oak Ridge National Laboratory
    The Hong Kong University of Science and Technology (Guangzhou))

  • Weilu Zhang

    (The University of Tokyo
    Sophia University)

  • Youguo Shi

    (Chinese Academy of Sciences)

  • Ziqiang Wang

    (Boston College)

  • Shik Shin

    (The University of Tokyo
    Office of University Professor, The University of Tokyo)

  • H. N. Lee

    (Oak Ridge National Laboratory)

  • H. Miao

    (Oak Ridge National Laboratory)

  • Takeshi Kondo

    (The University of Tokyo
    The University of Tokyo)

  • Kozo Okazaki

    (The University of Tokyo
    The University of Tokyo
    The University of Tokyo)

Abstract

In crystalline materials, electron-phonon coupling (EPC) is a ubiquitous many-body interaction that drives conventional Bardeen-Cooper-Schrieffer superconductivity. Recently, in a new kagome metal CsV3Sb5, superconductivity that possibly intertwines with time-reversal and spatial symmetry-breaking orders is observed. Density functional theory calculations predicted weak EPC strength, λ, supporting an unconventional pairing mechanism in CsV3Sb5. However, experimental determination of λ is still missing, hindering a microscopic understanding of the intertwined ground state of CsV3Sb5. Here, using 7-eV laser-based angle-resolved photoemission spectroscopy and Eliashberg function analysis, we determine an intermediate λ=0.45–0.6 at T = 6 K for both Sb 5p and V 3d electronic bands, which can support a conventional superconducting transition temperature on the same magnitude of experimental value in CsV3Sb5. Remarkably, the EPC on the V 3d-band enhances to λ~0.75 as the superconducting transition temperature elevated to 4.4 K in Cs(V0.93Nb0.07)3Sb5. Our results provide an important clue to understand the pairing mechanism in the kagome superconductor CsV3Sb5.

Suggested Citation

  • Yigui Zhong & Shaozhi Li & Hongxiong Liu & Yuyang Dong & Kohei Aido & Yosuke Arai & Haoxiang Li & Weilu Zhang & Youguo Shi & Ziqiang Wang & Shik Shin & H. N. Lee & H. Miao & Takeshi Kondo & Kozo Okaza, 2023. "Testing electron–phonon coupling for the superconductivity in kagome metal CsV3Sb5," Nature Communications, Nature, vol. 14(1), pages 1-7, December.
  • Handle: RePEc:nat:natcom:v:14:y:2023:i:1:d:10.1038_s41467-023-37605-7
    DOI: 10.1038/s41467-023-37605-7
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    1. Hui Chen & Haitao Yang & Bin Hu & Zhen Zhao & Jie Yuan & Yuqing Xing & Guojian Qian & Zihao Huang & Geng Li & Yuhan Ye & Sheng Ma & Shunli Ni & Hua Zhang & Qiangwei Yin & Chunsheng Gong & Zhijun Tu & , 2021. "Roton pair density wave in a strong-coupling kagome superconductor," Nature, Nature, vol. 599(7884), pages 222-228, November.
    2. Yong Hu & Xianxin Wu & Brenden R. Ortiz & Sailong Ju & Xinloong Han & Junzhang Ma & Nicholas C. Plumb & Milan Radovic & Ronny Thomale & Stephen D. Wilson & Andreas P. Schnyder & Ming Shi, 2022. "Rich nature of Van Hove singularities in Kagome superconductor CsV3Sb5," Nature Communications, Nature, vol. 13(1), pages 1-7, December.
    3. A. Lanzara & P. V. Bogdanov & X. J. Zhou & S. A. Kellar & D. L. Feng & E. D. Lu & T. Yoshida & H. Eisaki & A. Fujimori & K. Kishio & J.-I. Shimoyama & T. Noda & S. Uchida & Z. Hussain & Z.-X. Shen, 2001. "Evidence for ubiquitous strong electron–phonon coupling in high-temperature superconductors," Nature, Nature, vol. 412(6846), pages 510-514, August.
    4. Hailan Luo & Qiang Gao & Hongxiong Liu & Yuhao Gu & Dingsong Wu & Changjiang Yi & Junjie Jia & Shilong Wu & Xiangyu Luo & Yu Xu & Lin Zhao & Qingyan Wang & Hanqing Mao & Guodong Liu & Zhihai Zhu & You, 2022. "Electronic nature of charge density wave and electron-phonon coupling in kagome superconductor KV3Sb5," Nature Communications, Nature, vol. 13(1), pages 1-8, December.
    5. T. L. Yu & M. Xu & W. T. Yang & Y. H. Song & C. H. P. Wen & Q. Yao & X. Lou & T. Zhang & W. Li & X. Y. Wei & J. K. Bao & G. H. Cao & P. Dudin & J. D. Denlinger & V. N. Strocov & R. Peng & H. C. Xu & D, 2022. "Strong band renormalization and emergent ferromagnetism induced by electron-antiferromagnetic-magnon coupling," Nature Communications, Nature, vol. 13(1), pages 1-8, December.
    6. F. H. Yu & D. H. Ma & W. Z. Zhuo & S. Q. Liu & X. K. Wen & B. Lei & J. J. Ying & X. H. Chen, 2021. "Unusual competition of superconductivity and charge-density-wave state in a compressed topological kagome metal," Nature Communications, Nature, vol. 12(1), pages 1-6, December.
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