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Tunable anomalous Hall conductivity through volume-wise magnetic competition in a topological kagome magnet

Author

Listed:
  • Z. Guguchia

    (Paul Scherrer Institute
    Princeton University)

  • J. A. T. Verezhak

    (Paul Scherrer Institute)

  • D. J. Gawryluk

    (Paul Scherrer Institut)

  • S. S. Tsirkin

    (University of Zürich)

  • J.-X. Yin

    (Princeton University)

  • I. Belopolski

    (Princeton University)

  • H. Zhou

    (Peking University
    University of Chinese Academy of Science)

  • G. Simutis

    (Paul Scherrer Institute)

  • S.-S. Zhang

    (Princeton University)

  • T. A. Cochran

    (Princeton University)

  • G. Chang

    (Princeton University)

  • E. Pomjakushina

    (Paul Scherrer Institut)

  • L. Keller

    (Paul Scherrer Institut)

  • Z. Skrzeczkowska

    (Paul Scherrer Institut)

  • Q. Wang

    (Renmin University of China)

  • H. C. Lei

    (Renmin University of China)

  • R. Khasanov

    (Paul Scherrer Institute)

  • A. Amato

    (Paul Scherrer Institute)

  • S. Jia

    (Peking University
    University of Chinese Academy of Science)

  • T. Neupert

    (University of Zürich)

  • H. Luetkens

    (Paul Scherrer Institute)

  • M. Z. Hasan

    (Princeton University)

Abstract

Magnetic topological phases of quantum matter are an emerging frontier in physics and material science. Along these lines, several kagome magnets have appeared as the most promising platforms. Here, we explore magnetic correlations in the kagome magnet Co3Sn2S2. Using muon spin-rotation, we present evidence for competing magnetic orders in the kagome lattice of this compound. Our results show that while the sample exhibits an out-of-plane ferromagnetic ground state, an in-plane antiferromagnetic state appears at temperatures above 90 K, eventually attaining a volume fraction of 80% around 170 K, before reaching a non-magnetic state. Strikingly, the reduction of the anomalous Hall conductivity (AHC) above 90 K linearly follows the disappearance of the volume fraction of the ferromagnetic state. We further show that the competition of these magnetic phases is tunable through applying either an external magnetic field or hydrostatic pressure. Our results taken together suggest the thermal and quantum tuning of Berry curvature induced AHC via external tuning of magnetic order.

Suggested Citation

  • Z. Guguchia & J. A. T. Verezhak & D. J. Gawryluk & S. S. Tsirkin & J.-X. Yin & I. Belopolski & H. Zhou & G. Simutis & S.-S. Zhang & T. A. Cochran & G. Chang & E. Pomjakushina & L. Keller & Z. Skrzeczk, 2020. "Tunable anomalous Hall conductivity through volume-wise magnetic competition in a topological kagome magnet," Nature Communications, Nature, vol. 11(1), pages 1-9, December.
    • Handle: RePEc:nat:natcom:v:11:y:2020:i:1:d:10.1038_s41467-020-14325-w
    DOI: 10.1038/s41467-020-14325-w
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    Cited by:

    1. Z. Guguchia & D. J. Gawryluk & S. Shin & Z. Hao & C. Mielke III & D. Das & I. Plokhikh & L. Liborio & J. Kane Shenton & Y. Hu & V. Sazgari & M. Medarde & H. Deng & Y. Cai & C. Chen & Y. Jiang & A. Ama, 2023. "Hidden magnetism uncovered in a charge ordered bilayer kagome material ScV6Sn6," Nature Communications, Nature, vol. 14(1), pages 1-8, December.
    2. Z. Guguchia & C. Mielke & D. Das & R. Gupta & J.-X. Yin & H. Liu & Q. Yin & M. H. Christensen & Z. Tu & C. Gong & N. Shumiya & Md Shafayat Hossain & Ts. Gamsakhurdashvili & M. Elender & Pengcheng Dai , 2023. "Tunable unconventional kagome superconductivity in charge ordered RbV3Sb5 and KV3Sb5," Nature Communications, Nature, vol. 14(1), pages 1-10, December.
    3. S. X. M. Riberolles & Tyler J. Slade & Tianxiong Han & Bing Li & D. L. Abernathy & P. C. Canfield & B. G. Ueland & P. P. Orth & Liqin Ke & R. J. McQueeney, 2024. "Chiral and flat-band magnetic quasiparticles in ferromagnetic and metallic kagome layers," Nature Communications, Nature, vol. 15(1), pages 1-7, December.
    4. Jaume Meseguer-Sánchez & Catalin Popescu & José Luis García-Muñoz & Hubertus Luetkens & Grigol Taniashvili & Efrén Navarro-Moratalla & Zurab Guguchia & Elton J. G. Santos, 2021. "Coexistence of structural and magnetic phases in van der Waals magnet CrI3," Nature Communications, Nature, vol. 12(1), pages 1-7, December.

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