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Charge-density wave mediated quasi-one-dimensional Kondo lattice in stripe-phase monolayer 1T-NbSe2

Author

Listed:
  • Zhen-Yu Liu

    (Huazhong University of Science and Technology)

  • Heng Jin

    (Beijing Normal University
    Beijing Computational Science Research Center)

  • Yao Zhang

    (Huazhong University of Science and Technology)

  • Kai Fan

    (Huazhong University of Science and Technology)

  • Ting-Fei Guo

    (Huazhong University of Science and Technology)

  • Hao-Jun Qin

    (Huazhong University of Science and Technology)

  • Lan-Fang Zhu

    (Huazhong University of Science and Technology)

  • Lian-Zhi Yang

    (Huazhong University of Science and Technology)

  • Wen-Hao Zhang

    (Huazhong University of Science and Technology)

  • Bing Huang

    (Beijing Normal University
    Beijing Computational Science Research Center)

  • Ying-Shuang Fu

    (Huazhong University of Science and Technology
    Wuhan Institute of Quantum Technology)

Abstract

The heavy fermion physics is dictated by subtle competing exchange interactions, posing a challenge to their understanding. One-dimensional (1D) Kondo lattice model has attracted special attention in theory, because of its exact solvability and expected unusual quantum criticality. However, such experimental material systems are extremely rare. Here, we demonstrate the realization of quasi-1D Kondo lattice behavior in a monolayer van der Waals crystal NbSe2, that is driven into a stripe phase via Se-deficient line defects. Spectroscopic imaging scanning tunneling microscopy measurements and first-principles calculations indicate that the stripe-phase NbSe2 undergoes a novel charge-density wave transition, creating a matrix of local magnetic moments. The Kondo lattice behavior is manifested as a Fano resonance at the Fermi energy that prevails the entire film with a high Kondo temperature. Importantly, coherent Kondo screening occurs only in the direction of the stripes. Upon approaching defects, the Fano resonance exhibits prominent spatial 1D oscillations along the stripe direction, reminiscent of Kondo holes in a quasi-1D Kondo lattice. Our findings provide a platform for exploring anisotropic Kondo lattice behavior in the monolayer limit.

Suggested Citation

  • Zhen-Yu Liu & Heng Jin & Yao Zhang & Kai Fan & Ting-Fei Guo & Hao-Jun Qin & Lan-Fang Zhu & Lian-Zhi Yang & Wen-Hao Zhang & Bing Huang & Ying-Shuang Fu, 2024. "Charge-density wave mediated quasi-one-dimensional Kondo lattice in stripe-phase monolayer 1T-NbSe2," Nature Communications, Nature, vol. 15(1), pages 1-8, December.
  • Handle: RePEc:nat:natcom:v:15:y:2024:i:1:d:10.1038_s41467-024-45335-7
    DOI: 10.1038/s41467-024-45335-7
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    References listed on IDEAS

    as
    1. Shiwei Shen & Chenhaoping Wen & Pengfei Kong & Jingjing Gao & Jianguo Si & Xuan Luo & Wenjian Lu & Yuping Sun & Gang Chen & Shichao Yan, 2022. "Inducing and tuning Kondo screening in a narrow-electronic-band system," Nature Communications, Nature, vol. 13(1), pages 1-7, December.
    2. Bin Shen & Yongjun Zhang & Yashar Komijani & Michael Nicklas & Robert Borth & An Wang & Ye Chen & Zhiyong Nie & Rui Li & Xin Lu & Hanoh Lee & Michael Smidman & Frank Steglich & Piers Coleman & Huiqiu , 2020. "Strange-metal behaviour in a pure ferromagnetic Kondo lattice," Nature, Nature, vol. 579(7797), pages 51-55, March.
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