Collinear ferromagnetism with reduced moment length in kagome magnet Nd3Ru4Al12

Abstract

We determine the magnetic ground state of the kagome lattice magnet Nd3Ru4Al12 by single-crystal neutron diffraction, supported by experiments with polarized neutrons. We identify this material as a collinear ferromagnet ("hex-FM") with uniform moment length mc = 2.1 μB/Nd and ordering vector Q = 0, in contrast to a previous, seminal report that proposed unequal moment lengths on two Nd sites, here called the "ortho-FM" state. Our analysis of the flipping ratio in polarized neutron scattering is consistent with the hex-FM state. The results provide a microscopic basis for understanding the large fluctuation-induced Hall and Nernst responses near TC = 41 K, as previously reported for Nd3Ru4Al12.

arXiv comment15 pages, 6 figures

References in corpus (24)

• Massive Dirac fermions in a ferromagnetic kagome metal
• Herbertsmithite and the Search for the Quantum Spin Liquid
• Theory of Thermal Hall Effect in Quantum Magnets
• Skyrmion phase and competing magnetic orders on a breathing kagome lattice
• The thermal Hall effect of spin excitations in a Kagome magnet
• Effect of lattice geometry on magnon Hall effect in ferromagnetic insulators
• Flat bands, strange metals, and the Kondo effect
• Thermal Hall Effect of Spins in a Paramagnet
• Spin chirality fluctuation in two-dimensional ferromagnets with perpendicular anisotropy
• Nanometric skyrmion lattice from anisotropic exchange interactions in a centrosymmetric host
• Magnetic behavior of Gd3Ru4Al12, a layered compound with a distorted Kagome net
• Metallic $p$-wave magnet with commensurate spin helix
• Thermally Driven Topology in Chiral Magnets
• Helical Ordering of Spin Trimers in a Distorted Kagome Lattice of Gd${}_3$Ru${}_4$Al${}_{12}$ Studied by Resonant X-ray Diffraction
• Kagome lattice promotes chiral spin fluctuations
• Non-coplanar helimagnetism in the layered van-der-Waals metal DyTe${}_3$
• Complex magnetic and spatial symmetry breaking from correlations in kagome flat bands
• Ordering phenomena of spin trimers accompanied by large geometrical Hall effect
• Magnetic orderings from spin-orbit coupled electrons on kagome lattice
• Large Tunable Anomalous Hall Effect in the Kagom$\acute{e}$ Antiferromagnet U${}_3$Ru${}_4$Al${}_{12}$
• Thermal Hall Effect of Chiral Spin Fluctuations
• Self-consistent Analysis of Doping Effect for Magnetic Ordering in Stacked-Kagome Weyl System
• Lattice-commensurate skyrmion texture in a centrosymmetric breathing kagome magnet
• Magnetic Phases of Frustrated Ferromagnetic Spin-Trimer System Gd_3_Ru_4_Al_12_ With a Distorted Kagome Lattice Structure