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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.

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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