Competing antiferromagnetic order in transition metal dichalcogenides FexNbS2

ORAL

Abstract

The transition metal dichalcogenides (TMDCs) have attracted a great deal of attention due to their potential for new spintronic technologies. Intercalated variants TxMA2 (T=3d transition metal; M = Ta, Nb; A = S, Se) with x=⅓, which are of particular interest, show a rich array of magnetic phenomena. Chiral magnetism has been reported in Cr and Mn intercalation complexes that give rise to anomalous hall effect. The V complex exhibits a uniaxial chiral magnetism. Unlike these materials, FexNbS2 is antiferromagnetic (AFM) with strong anisotropy along the c axis. Interestingly, devices made from Fe1/3+dNbS2 crystal exhibit novel spintronic properties that are coupled to the antiferromagnetic transition and sensitive to the intercalation ratio. We comprehensively investigated the magnetic structures for two successive transitions at and off- stoichiometry. We found that the sensitivity of the transport properties is reflected in the x-dependence of magnetic ground state, where distinct AFM orders compete over a small range of the intercalation ratio.

*This work is funded by the U.S. Department of Energy, Office of Science, Office of Basic Energy Sciences, Materials Sciences and Engineering Division under Con- tract No. DE-AC02-05-CH11231 within the Quantum Materials Program (KC2202).

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Presenters

  • Shan Wu

    • Lawrence Berkeley National Laboratory

Authors

  • Shan Wu

    • Lawrence Berkeley National Laboratory

  • Zhijun Xu

    • National Institute of Standards and Technology
    • NIST and University of Maryland
    • NIST Center for Neutron research, National Institute of Standards and Technology
    • NIST Center for Neutron Research
    • University of Maryland
    • NIST Center for Neutron Research, NIST

  • Shannon Haley

    • University of California, Berkeley

  • Sophie Weber

    • University of California, Berkeley

  • Eran Maniv

    • University of California, Berkeley

  • Yiming Qiu

    • NIST Center for Neutron Research, National Institute of Standards and Technology
    • NIST Center for Neutron research, National Institute of Standards and Technology
    • NIST
    • National Institute of Standards and Technology

  • Adam Aczel

    • Oak Ridge National Laboratory
    • Quantum Condensed Matter Division, Oak Ridge National Laboratory, Oak Ridge, TN 37831, USA
    • Neutron Scattering Division, Oak Ridge National Laboratory
    • Oak Ridge National Lab

  • Jeffrey Neaton

    • Lawrence Berkeley National Laboratory
    • Physics, University of California at Berkeley
    • Physics, University of California, Berkeley
    • University of California, Berkeley; Lawrence Berkeley National Lab; Kavli Energy NanoScience Institute at Berkeley
    • Department of Physics, University of California Berkeley
    • University of California, Berkeley
    • Physics, University of California, Berkeley, and Materials Sciences Division, Lawrence Berkeley National Laboratory
    • Molecular Foundry, Lawrence Berkeley National Laboratory
    • University of California Berkeley

  • James Analytis

    • University of California, Berkeley
    • University of California at Berkeley
    • Physics, University of California, Berkeley

  • Robert J Birgeneau

    • Lawrence Berkeley National Laboratory
    • Physics, University of California, Berkeley
    • University of California, Berkeley
    • Department of Physics, University of California Berkeley
    • Department of Physics, University of California, Berkeley