Ground state magnetic structure of Mn${}_3$Ge

Abstract

We have used spherical neutron polarimetry to investigate the magnetic structure of the Mn spins in the hexagonal semimetal Mn${}_3$Ge, which exhibits a large intrinsic anomalous Hall effect. Our analysis of the polarimetric data finds a strong preference for a spin structure with $E_{1g}$ symmetry relative to the $D_{6h}$ point group. We show that weak ferromagnetism is an inevitable consequence of the symmetry of the observed magnetic structure, and that sixth order anisotropy is needed to select a unique ground state.

References in corpus (16)

• Anomalous Hall effect
• Large anomalous Hall effect driven by non-vanishing Berry curvature in non-collinear antiferromagnetic Mn3Ge
• Anomalous Hall effect arising from noncollinear antiferromagnetism
• Evidence for Magnetic Weyl Fermions in a Correlated Metal
• Topological Weyl semimetals in the chiral antiferromagnetic materials Mn3Ge and Mn3Sn
• Non-collinear Antiferromagnets and the Anomalous Hall Effect
• Giant Anomalous Hall Effect in the Chiral Antiferromagnet Mn3Ge
• Strong, anisotropic anomalous Hall effect and spin Hall effect in chiral antiferromagnetic compounds Mn${}_{3}X$ ($X$ = Ge, Sn, Ga, Ir, Rh and Pt)
• Anomalous Hall effect and topological defects in antiferromagnetic Weyl semimetals: Mn${}_3$Sn/Ge
• Large anomalous Nernst and spin Nernst effects in noncollinear antiferromagnets Mn${}_{3}X$ ($X$ = Sn, Ge, Ga)
• Spin Hall effect emerging from a chiral magnetic lattice without spin-orbit coupling
• First-principles study of the structural stability of Mn3Z (Z=Ga, Sn and Ge) Heusler compounds
• Weyl Fermions in antiferromagnetic Mn(3)Sn and Mn(3)Ge
• Gradual pressure-induced change in the magnetic structure of the non-collinear antiferromagnet Mn${}_3$Ge
• Anomalous Hall Effect and Spontaneous Orbital Magnetization in Antiferromagnetic Weyl Metal
• Weak ferromagnetism in hexagonal Mn3Z (Z=Sn, Ge, Ga) alloys

Cited by in corpus (21)

• Anomalous transport due to Weyl fermions in the chiral antiferromagnets Mn${}_3$$X$, $X$ = Sn, Ge
• Spin Space Groups: Full Classification and Applications
• Tunneling Magnetoresistance in Noncollinear Antiferromagnetic Tunnel Junctions
• Antichiral spin order its Goldstone modes and their hybridization with phonons in the topological semimetal Mn3Ge
• Pressure tuning of the anomalous Hall effect in the chiral antiferromagnet Mn3Ge
• Intrinsic Magnetic Topological Materials
• Anisotropic magnetic interactions in hexagonal AB-stacked kagome lattice structures: Applications to ${\mathrm{Mn}}_3\mathrm{X}$ ($\mathrm{X}$ = $\mathrm{Ge}$, $\mathrm{Sn}$, $\mathrm{Ga}$) compounds
• Strong Magneto-Elastic Coupling in Mn${}_3$X (X = Ge, Sn)
• Unconventional magneto-resistance, and electronic transition in Mn${}_3$Ge Weyl semimetal
• Zeeman term for the Néel vector in a two sublattice antiferromagnet using Dzyaloshinsky-Moriya interaction and magnetic field
• Magnetism and Magnetotransport in the Kagome Antiferromagnet ${\text{Mn}}_3\text{Ge}$
• Intertwined Charge and Spin Density Waves in a Topological Kagome Material
• Strain tuning the magnetic and transport properties of Mn${}_3$Ge
• Vector Chirality $\kappa$ Driven Topological Phase Transition and the Associated Anomalous Hall Conductivity Tuning in a Non-Collinear Antiferromagnet
• Magnetic interactions in AB-stacked kagome lattices: magnetic structure, symmetry, and duality
• Chiral magnetism, lattice dynamics, and anomalous Hall conductivity in the novel V${}_3$AuN antiferromagnetic antiperovskite
• Crystal tensor properties of magnetic materials with and without spin-orbit coupling. Application of spin point groups as approximate symmetries
• Anomalous Hall effect and magnetic structure of the topological semimetal (Mn${}_{0.78}$Fe${}_{0.22}$)${}_3$Ge
• Tuning the Hall response of a noncollinear antiferromagnet via spin-transfer torques and oscillating magnetic fields
• Weyl points and anomalous transport effects tuned by the Fe doping in Mn${}_3$Ge Weyl semimetal
• Uniaxial stress tuning of the anomalous Hall effect in Mn3Ge