Antiferromagnetic long-range order in $5d^1$ double-perovskite Sr${}_2$MgReO${}_6$

Abstract

The double-perovskite A${}_2$BB'O${}_6$ with heavy transition metal ions on the ordered B' sites is an important family of compounds to study the interplay between electron correlation and spin-orbit coupling (SOC). Here we prepared high-quality Sr${}_2$MgReO${}_6$ powder and single-crystal samples and performed non-resonant and resonant synchrotron x-ray diffraction experiments to investigate its magnetic ground state. By combining the magnetic susceptibility and heat capacity measurements, we conclude that Sr${}_2$MgReO${}_6$ exhibits a layered antiferromagnetic (AF) order at temperatures below $\sim$ 55 K with a propagation vector q = (001), which contrasts the previously suspected spin glass state. Our works clarify the magnetic order in Sr${}_2$MgReO${}_6$ and demonstrate it as a candidate system to look for magnetic octupolar orders and exotic spin dynamics.

6 pages, 5 figures

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• Detection of multipolar orders in the spin-orbit-entangled 5d Mott insulator Ba2MgReO6
• Successive Symmetry Breaking in a Jeff = 3/2 Quartet in the Spin-Orbit Coupled Insulator Ba2MgReO6
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Cited by in corpus (12)

• Spin-orbit-lattice entangled state in A${}_2$MgReO${}_6$ (A = Ca, Sr, Ba) revealed by resonant inelastic X-ray scattering
• Phase transition in the 5d1 double perovskite Ba2CaReO6 induced by high magnetic field
• Possible quadrupole order in tetragonal Ba2CdReO6 and chemical trend in the ground states of 5d1 double perovskites
• Magnetic order and 5d1 multipoles in a rhenate double perovskite Ba2MgReO6
• Quadrupole partial orders and triple-$q$ states on the face-centered cubic lattice
• Valence bond glass state in the 4$d^1$ fcc antiferromagnet Ba${}_2$LuMoO${}_6$
• Interplay between quadrupolar and magnetic interactions in 5$d^1$ double perovskite Ba${}_2$MgReO${}_6$ under pressure
• Pinalites: Optical properties and Quantum Magnetism of Heteroanionic A${}_3$MO${}_5$X${}_2$ Compounds
• Dynamic Jahn-Teller Phenomena in Heavy Transition Metal Compounds
• Magnetic behavior of the $5d^1$ Re-based double perovskite Sr${}_2$ZnReO${}_6$
• Dipolar and quadrupolar correlations in the $5d^2$ Re-based double perovskites Ba${}_2$YReO${}_6$ and Ba${}_2$ScReO${}_6$
• Intersite Coulomb repulsion driven quadrupole instability and magnetic ordering in the orbital frustrated Ba${}_2$MgReO${}_6$