Magnetic order in the Dirac material EuMnSb<sub>2</sub>

ORAL

Abstract

EuMnSb2 is a potential Dirac semimetal with Dirac fermions located within the Sb layers. Here we present results from single-crystal neutron diffraction experiments on EuMnSb2. We find that the Eu and Mn magnetic sublattices order antiferromagnetically (AF) below 24(1) K and 324(1) K, respectively, with an additional magnetic phase transition at 9(1) K which may be related to the coupling between both magnetic sublattices. Neutron diffraction shows that each AF phase is characterized by a magnetic unit cell equal to the chemical one.

*This work was supported by the CATS, an EFRC, and the DMSE, both funded by the U.S. DOE, Office of BES through the Ames Laboratory under its Contract No. DE-AC02-07CH11358.

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Presenters

  • John Wilde

    • Physics and Astronomy, Iowa State University/Ames Laboratory
    • Ames Lab/Iowa State

Authors

  • John Wilde

    • Physics and Astronomy, Iowa State University/Ames Laboratory
    • Ames Lab/Iowa State

  • Benjamin Ueland

    • Ames Lab
    • Physics and Astronomy, Iowa State University/Ames Laboratory
    • Division of Materials Science & Engineering, Ames Laboratory
    • Ames Laboratory and Iowa State University, Ames, IA USA 50011
    • Ames Laboratory/Iowa State University

  • Simon Riberolles

    • Physics and Astronomy, Iowa State University/Ames Laboratory
    • Division of Materials Science & Engineering, Ames Laboratory
    • Ames Laboratory and Iowa State Univeristy

  • Dominic H Ryan

    • McGill University

  • Andreas Kreyssig

    • Physics and Astronomy, Iowa State University/Ames Laboratory
    • Department of Physics and Astronomy, Ames Laboratory, Iowa State University
    • Ames Lab/Iowa State
    • Ames Laboratory, Iowa State University, Dept. of Physics and Astronomy, Ames
    • Ames Laboratory and Iowa State Univeristy

  • David Vaknin

    • Ames Lab
    • Physics and Astronomy, Iowa State University/Ames Laboratory

  • Thomas W Heitmann

    • University of Missouri
    • University of Missouri Research Reactor
    • The Missouri Research Reactor, University of Missouri, Columbia, Missouri
    • Missouri Research Reactor, University of Missouri
    • University of Missouri Research Reactor, University of Missouri

  • Yong Liu

    • Ames Lab
    • Institute of Physics, Ecole Polytechnique Federale de Lausanne
    • Ames Laboratory

  • Sergey Budko

    • Iowa State University/ Ames Laboratory
    • Ames Laboratory
    • Physics and Astronomy, Iowa State University/Ames Laboratory
    • Ames Laboratory/Iowa State University
    • Ames Lab/Iowa State
    • Ames Laboratory, Ames, IA
    • Iowa State University/AmesLab
    • Department of Physics & Astronomy, Iowa State University/Ames Laboratory

  • Robert J McQueeney

    • Ames Lab
    • Physics and Astronomy, Iowa State University/Ames Laboratory
    • Department of Physics and Astronomy, Ames Laboratory, Iowa State University
    • Ames Lab/Iowa State
    • Ames Laboratory, U.S. Department of Energy, Ames, Iowa 50011, USA
    • Iowa State University
    • Ames Laboratory and Iowa State University, Ames, IA USA 50011
    • Ames Laboratory/Iowa State University