Bulk properties of the chiral metallic triangular antiferromagnets Ni1/3Nb S2 and Ni1/3Ta S2

Yeochan An, Pyeongjae Park, Chaebin Kim, Kaixuan Zhang, Hyeoncheol Kim, Maxim Avdeev, Jaewon Kim, Myung Joon Han, Han Jin Noh, Seungho Seong, J. S. Kang, Hyeong Do Kim, Je Geun Park

Research output: Contribution to journalArticlepeer-review

3 Scopus citations

Abstract

TM1/3MS2 (TM=3d transition metal, M=Nb,Ta) has recently attracted increasing attention due to its wide variety of fascinating magnetic structures and the chiral arrangement of intercalated TM atoms. We investigated the bulk properties of Ni1/3NbS2 and Ni1/3TaS2 using magnetization, transport, heat capacity, powder neutron diffraction, and x-ray absorption spectroscopy. Ni1/3NbS2 undergoes a phase transition at 84 K, developing an 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 Ni1/3NbS2 and Ni1/3TaS2 promising material candidates for future studies on antiferromagnetic spintronics.

Original languageEnglish
Article number054418
JournalPhysical Review B
Volume108
Issue number5
DOIs
StatePublished - Aug 1 2023
Externally publishedYes

Funding

We thank Youjin Lee for valuable discussions. This work was supported by the Samsung Science & Technology Foundation (Grant No. SSTF-BA2101-05). J.-G.P. is partly funded by the Leading Researcher Program of the National Research Foundation of Korea (Grant No. 2020R1A3B2079375), and MSIT and POSTECH-supported experiments at PAL. J.-S.K. and S.S. acknowledge the support by the NRF (Grant No. 2019R1A2C1004929).

FundersFunder number
National Research Foundation of Korea2020R1A3B2079375, 2019R1A2C1004929
Ministry of Science, ICT and Future Planning
Samsung Science and Technology FoundationSSTF-BA2101-05

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