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Hidden non-collinear spin-order induced topological surface states

Author

Listed:
  • Zengle Huang

    (Rutgers University)

  • Hemian Yi

    (The Pennsylvania State University)

  • Daniel Kaplan

    (Rutgers University
    Weizmann Institute of Science)

  • Lujin Min

    (The Pennsylvania State University)

  • Hengxin Tan

    (Weizmann Institute of Science)

  • Ying-Ting Chan

    (Rutgers University)

  • Zhiqiang Mao

    (The Pennsylvania State University)

  • Binghai Yan

    (Weizmann Institute of Science)

  • Cui-Zu Chang

    (The Pennsylvania State University)

  • Weida Wu

    (Rutgers University)

Abstract

Rare-earth monopnictides are a family of materials simultaneously displaying complex magnetism, strong electronic correlation, and topological band structure. The recently discovered emergent arc-like surface states in these materials have been attributed to the multi-wave-vector antiferromagnetic order, yet the direct experimental evidence has been elusive. Here we report observation of non-collinear antiferromagnetic order with multiple modulations using spin-polarized scanning tunneling microscopy. Moreover, we discover a hidden spin-rotation transition of single-to-multiple modulations 2 K below the Néel temperature. The hidden transition coincides with the onset of the surface states splitting observed by our angle-resolved photoemission spectroscopy measurements. Single modulation gives rise to a band inversion with induced topological surface states in a local momentum region while the full Brillouin zone carries trivial topological indices, and multiple modulation further splits the surface bands via non-collinear spin tilting, as revealed by our calculations. The direct evidence of the non-collinear spin order in NdSb not only clarifies the mechanism of the emergent topological surface states, but also opens up a new paradigm of control and manipulation of band topology with magnetism.

Suggested Citation

  • Zengle Huang & Hemian Yi & Daniel Kaplan & Lujin Min & Hengxin Tan & Ying-Ting Chan & Zhiqiang Mao & Binghai Yan & Cui-Zu Chang & Weida Wu, 2024. "Hidden non-collinear spin-order induced topological surface states," Nature Communications, Nature, vol. 15(1), pages 1-8, December.
  • Handle: RePEc:nat:natcom:v:15:y:2024:i:1:d:10.1038_s41467-024-47340-2
    DOI: 10.1038/s41467-024-47340-2
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    1. Benjamin Schrunk & Yevhen Kushnirenko & Brinda Kuthanazhi & Junyeong Ahn & Lin-Lin Wang & Evan O’Leary & Kyungchan Lee & Andrew Eaton & Alexander Fedorov & Rui Lou & Vladimir Voroshnin & Oliver J. Cla, 2022. "Emergence of Fermi arcs due to magnetic splitting in an antiferromagnet," Nature, Nature, vol. 603(7902), pages 610-615, March.
    2. M. J. Lawler & K. Fujita & Jhinhwan Lee & A. R. Schmidt & Y. Kohsaka & Chung Koo Kim & H. Eisaki & S. Uchida & J. C. Davis & J. P. Sethna & Eun-Ah Kim, 2010. "Intra-unit-cell electronic nematicity of the high-Tc copper-oxide pseudogap states," Nature, Nature, vol. 466(7304), pages 347-351, July.
    3. Benjamin Schrunk & Yevhen Kushnirenko & Brinda Kuthanazhi & Junyeong Ahn & Lin-Lin Wang & Evan O’Leary & Kyungchan Lee & Andrew Eaton & Alexander Fedorov & Rui Lou & Vladimir Voroshnin & Oliver J. Cla, 2022. "Publisher Correction: Emergence of Fermi arcs due to magnetic splitting in an antiferromagnet," Nature, Nature, vol. 605(7909), pages 5-5, May.
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