Topological Hall effect and diverse field-induced magnetic phases in LuMn<sub>6</sub>Sn<sub>6</sub>

ORAL

Abstract

RMn₆Sn₆ (R= rare-earth elements) kagome metals are characterized by a wide range of field-induced complex magnetic textures, leading to distinct topological transport phenomena, such as topological Hall and Nernst effects [1,2]. In this study, we present the intricate magnetic phase diagram for LuMn₆Sn₆, constructed from magnetization and magnetotransport measurements up to high magnetic fields and a wide range of temperatures. This (H,T) phase-diagram results from the competition between ferromagnetic and antiferromagnetic interactions between the Mn kagome layers. We will also discuss neutron diffraction data for some of the observed magnetic phases, along with Hall effect measurements, which reveal a notable and robust topological Hall component, that extends across a wide range of fields exceeding 20 T.

[1] . N. J. Ghimire, R. L. Dally, L. Poudel, D. Jones, D. Michel, N. T. Magar, M. Bleuel, M. A. McGuire, J. Jiang, J. Mitchell, Jeffrey W. Lynn, and I. I. Mazin. “Competing magnetic phases and fluctuation-driven scalar spin chirality in the kagome metal YMn6Sn6”, Science Advances 6, eabe2680 (2020).

[2]. R. P. Madhogaria, S. Mozaffari, H. Zhang, W. R. Meier, S.-H. Do, R. Xue, T. Matsuoka, and D. G. Mandrus, “Topological Nernst and topological thermal Hall effect in rare-earth kagome ScMn6Sn6” Phys. Rev. B 108, (2023) 125114.

*S.M. and D.G.M. acknowledge the support from AFOSR MURI (Novel Light-Matter Interactions in Topologically Non-Trivial Weyl Semimetal Structures and Systems), Grant No. FA9550-20-1-0322 and the support from the Gordon and Betty Moore Foundation's EPiQS Initiative, Grant No. GBMF9069. This publication is funded in part by a QuantEmX grant from ICAM and the Gordon and Betty Moore Foundation through Grant GBMF9616 to S.M.

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Publication: planned paper: "Topological Hall effect and diverse field-induced magnetic phases in LuMn6Sn6"

Presenters

  • Shirin Mozaffari

    • University of Tennessee

Authors

  • Shirin Mozaffari

    • University of Tennessee

  • Seung-Hwan Do

    • University of Tennessee

  • Richa P Madhogaria

    • University of Tennessee
    • Indian institute of science

  • Aikaterini Flessa Savvidou

    • National High Magnetic Field Laboratory

  • Brian W Casas

    • National High Magnetic Field Laboratory

  • William R Meier

    • University of Tennessee
    • University of Tennessee Knoxville

  • Rui Xue

    • University of Tennessee

  • Eun Sang Choi

    • National High Magnetic Field Lab
    • National High Magnetic Field Laboratory
    • National High Magnetic Field Laboratory, Florida State University

  • Luis M Balicas

    • National High Magnetic Field Laboratory
    • Florida State University, National High Magnetic Field Laboratory

  • David G Mandrus

    • University of Tennessee