On the magnetic structures of 1:1:1 stoichiometric topological phases &lt;em&gt;Ln&lt;/em&gt;SbTe (&lt;em&gt;Ln&lt;/em&gt; = Pr, Nd, Dy and Er)

Plokhikh, Igor; Pomjakushin, Vladimir; Gawryluk, Dariusz Jakub; Zaharko, Oksana; Pomjakushina, Ekaterina

doi:10.1016/j.jmmm.2023.171009

On the magnetic structures of 1:1:1 stoichiometric topological phases LnSbTe (Ln = Pr, Nd, Dy and Er)

Plokhikh I, Pomjakushin V, Gawryluk DJ, Zaharko O & Pomjakushina E

Citation

Plokhikh, I., Pomjakushin, V., Gawryluk, D. J., Zaharko, O., & Pomjakushina, E. (2023). On the magnetic structures of 1:1:1 stoichiometric topological phases LnSbTe (Ln = Pr, Nd, Dy and Er). Journal of Magnetism and Magnetic Materials, 583, 171009 (9 pp.). https://doi.org/10.1016/j.jmmm.2023.171009

Persistent URL https://www.dora.lib4ri.ch/psi/islandora/object/psi:53245

LnSbTe (Ln - lanthanide) group of materials, belonging to ZrSiS/PbFCl (P4/nmm) structure type, is a platform to study the phenomena originating from the interplay between the electronic correlations, magnetism, structural instabilities and topological electronic structure. Here we report a systematic study of magnetic properties and magnetic structures of LnSbTe materials. The studied materials undergo antiferromagnetic ordering at T_N = 2.1 K (Ln = Er), 6.7 K (Ln = Dy), 3.1 K (Ln = Nd). Neutron powder diffraction reveals ordering with k₁ = (½ + δ 0 0) in ErSbTe, k₂ = (½ 0 ¼) in NdSbTe. DySbTe features two propagation vectors k₂ and k₄ = (0 0 ½). No long-range magnetic order is observed in PrSbTe down to 1.8 K. We propose the most probable models of magnetic structures, discuss their symmetry and possible relation between the electronic structure and magnetic ordering.