Lone octupole and bulk magnetism in osmate 5d2 double perovskites

Abstract

Cubic double perovskites that host heavy ions with total angular momentum J = 2 can exhibit a singular magnetic state epitomized by a lone octupole and bulk ferro-type magnetism. It exists in the Chen - Balents Hamiltonian with a quadrupole interaction and competing exchange forces between the ions. Our symmetry inspired analysis mirrors the Dzyaloshinskii - Man'ko theory of latent antiferromagnetic ordering, and a 3-k collinear structure. Experimental tests of the singular state include neutron and x-ray Bragg diffraction.

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Cited by in corpus (14)

• Ferro-octupolar order and low-energy excitations in d${}^2$ double perovskites of Osmium
• Probing octupolar hidden order via Janus impurities
• Modelling Magnetic Multipolar Phases in Density Functional Theory
• Octupolar order and Ising quantum criticality tuned by strain and dimensionality: Application to $d$-orbital Mott insulators
• Spin-orbit effects in pentavalent Iridates: Models and materials
• Hidden orders in spin-orbit entangled correlated insulators
• Magnetic order and 5d1 multipoles in a rhenate double perovskite Ba2MgReO6
• Signatures of hidden octupolar order from nonlinear Hall effects
• Effects of charge doping on Mott insulator with strong spin-orbit coupling, Ba${}_2$NaOsO${}_6$
• Electronic excitations in $5d^4$ J=0 Os${}^{4+}$ halides studied by RIXS and optical spectroscopy
• Spin-orbit coupling in a half-filled $t_{2g}$ shell: the case of $5d^3$ K${}_2$ReCl${}_6$
• Fate of multipolar physics in $5d^2$ double perovskites
• Dipolar and quadrupolar correlations in the $5d^2$ Re-based double perovskites Ba${}_2$YReO${}_6$ and Ba${}_2$ScReO${}_6$
• Pseudo-chiral phonon splitting from octupolar magnetic order