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

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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Bulletin of the American Physical Society

APS March Meeting 2021

Volume 66, Number 1

Monday–Friday, March 15–19, 2021; Virtual; Time Zone: Central Daylight Time, USA

Session V52: Magnetic Topological Materials 7: New Materials

Abstract: V52.00013 : Magnetic order in the Dirac material EuMnSb2*

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Abstract: V52.00013 : Magnetic order in the Dirac material EuMnSb₂*