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Interplay between hole superconductivity and quantum critical antiferromagnetic fluctuations in electron-doped cuprates

Author

Listed:
  • Dongjoon Song

    (University of British Columbia
    Institute for Basic Science (IBS))

  • Suheon Lee

    (Institute for Basic Science (IBS)
    Sungkyunkwan University)

  • Zecheng Shen

    (Emory University)

  • Woobin Jung

    (Institute for Basic Science (IBS)
    Seoul National University)

  • Wonjun Lee

    (Institute for Basic Science (IBS))

  • Sungkyun Choi

    (Institute for Basic Science (IBS)
    Sungkyunkwan University)

  • Wonshik Kyung

    (Institute for Basic Science (IBS)
    Seoul National University)

  • Saegyeol Jung

    (Institute for Basic Science (IBS)
    Seoul National University)

  • Cheng-Maw Cheng

    (National Synchrotron Radiation Research Center)

  • Junyoung Kwon

    (Pohang University of Science and Technology)

  • S. Ishida

    (National Institute of Advanced Industrial Science and Technology (AIST))

  • Y. Yoshida

    (National Institute of Advanced Industrial Science and Technology (AIST))

  • Seung Ryong Park

    (Incheon National University)

  • H. Eisaki

    (National Institute of Advanced Industrial Science and Technology (AIST))

  • Yao Wang

    (Emory University)

  • Kwang-Yong Choi

    (Sungkyunkwan University)

  • C. Kim

    (Institute for Basic Science (IBS)
    Seoul National University)

Abstract

Antiferromagnetic spin fluctuations are the most promising candidate as the pairing glue of high critical temperature (Tc) superconductivity in cuprates. However, many-body states and intertwined orders have made it difficult to determine how electrons couple with fluctuating spins to form Cooper pairs. Recent experimental and theoretical studies have suggested spin fluctuation-driven quasiparticle band folding, but the relationship between the resultant Fermi pockets and superconductivity remains unclear. Here, using angle-resolved photoemission spectroscopy and numerical simulations, we show a proportional relationship between Tc and the quasiparticle weight of the incipient hole pocket near the nodal point in electron-doped Pr1−xLaCexCuO4±δ. Through complementary muon spin spectroscopy measurements, we uncover that the hole pocket forms only in the regime of the fluctuating antiferromagnetic ground state around a presumed quantum critical point. Our observations highlight the significance of the electron-spin fluctuation interaction in enhancing the hole pocket and consequently driving superconductivity.

Suggested Citation

  • Dongjoon Song & Suheon Lee & Zecheng Shen & Woobin Jung & Wonjun Lee & Sungkyun Choi & Wonshik Kyung & Saegyeol Jung & Cheng-Maw Cheng & Junyoung Kwon & S. Ishida & Y. Yoshida & Seung Ryong Park & H. , 2025. "Interplay between hole superconductivity and quantum critical antiferromagnetic fluctuations in electron-doped cuprates," Nature Communications, Nature, vol. 16(1), pages 1-9, December.
    • Handle: RePEc:nat:natcom:v:16:y:2025:i:1:d:10.1038_s41467-025-57942-z
    DOI: 10.1038/s41467-025-57942-z
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    References listed on IDEAS

    as
    1. Yuan Cao & Valla Fatemi & Shiang Fang & Kenji Watanabe & Takashi Taniguchi & Efthimios Kaxiras & Pablo Jarillo-Herrero, 2018. "Unconventional superconductivity in magic-angle graphene superlattices," Nature, Nature, vol. 556(7699), pages 43-50, April.
    2. B. Keimer & S. A. Kivelson & M. R. Norman & S. Uchida & J. Zaanen, 2015. "From quantum matter to high-temperature superconductivity in copper oxides," Nature, Nature, vol. 518(7538), pages 179-186, February.
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