Bulk properties of Ni-intercalated metallic triangular antiferromagnet Ni<sub>1/3</sub>NbS<sub>2</sub> and Ni<sub>1/3</sub>TaS<sub>2</sub>

ORAL

Abstract

TM1/3MS2 (TM = 3d transition metal, M = Nb, Ta) has recently been gaining increasing attention due to its wide variety of fascinating magnetic structures and the chiral arrangement of intercalated TM atoms. Here, we report the bulk properties of Ni1/3NbS2 and Ni1/3TaS2 by magnetization, transport, heat capacity, powder neutron diffraction, and X-ray absorption spectroscopy, which has received little attention compared to other TM1/3MS2. In particular, our work has determined the magnetic structure of Ni1/3NbS2 and Ni1/3TaS2 by neutron diffraction. Ni1/3NbS2 undergoes a phase transition at 84 K and develops antiferromagnetic helical order with a very long period along the c-axis (33c). On the other hand, a simple A-type spin configuration was observed for Ni1/3TaS2 below 158 K, where the spins are aligned to the c-axis. These magnetic structures, combined with lattice chirality and metallicity, can lead to various intriguing transport properties, making Ni1/3TaS2 and Ni1/3NbS2 promising material candidates for future studies on antiferromagnetic spintronics.

*This work was supported by the Samsung Science & Technology Foundation (Grant No. SSTF-BA2101-05) One of the authors (J.-G.P.) is partly funded by the Leading Researcher Program of the National Research Foundation of Korea (Grant no. 2020R1A3B2079375). Experiments at PAL were supported by MSIT and POSTECH.

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Publication: Bulk properties of Ni-intercalated metallic triangular antiferromagnet Ni1/3NbS2 and Ni1/3TaS2 (planned)

Presenters

  • Yeochan An

    • Seoul National University

Authors

  • Yeochan An

    • Seoul National University

  • Pyeongjae Park

    • Seoul Natl Univ

  • Kaixuan Zhang

    • Seoul National University

  • Hyeoncheol Kim

    • Seoul National University

  • Maxim Avdeev

    • Australian Nuclear Science and Technology Organisation
    • Australian Nuclear Science and Technology Organization, Locked Bag 2001, Kirrawee DC, NSW 2232, Australia
    • Australian Nuclear Science and Technology Organisation, New South Wales 2234, Australia

  • Jaewon Kim

    • Department of Physics, KAIST, Daejeon 34141, Republic of Korea

  • Myung Jun Han

    • KAIST
    • Korea Advanced Institute of Science and Technology

  • Han-Jin Noh

    • Chonnam National University
    • Department of Physics, Chonnam National University, Gwangju 61186, Korea

  • Je-Geun Park

    • Seoul Natl Univ
    • Seoul National University