Trompe L'oeil Ferromagnetism: magnetic point group analysis

Abstract

Ferromagnetism can be characterized by various unique phenomena such as non-zero magnetization (inducing magnetic attraction/repulsion), diagonal piezomagnetism, nonreciprocal circular dichroism (such as Faraday effect), odd-order (including linear) anomalous Hall effect, and magneto-optical Kerr effect. We identify all broken symmetries requiring each of the above phenomena, and also the relevant magnetic point groups (MPGs) with those broken symmetries. All of ferromagnetic point groups, relevant for ferromagnets, ferri-magnets and weak ferromagnets, can certainly exhibit all of these phenomena, including non-zero magnetization. Some of true antiferromagnets, which are defined as magnets with MPGs that do not belong to ferromagnetic point groups, can display these phenomena through magnetization induced by external perturbations such as applied current, electric fields, light illumination, and strain. Such MPGs are identified for each external perturbation. Since high-density and ultrafast spintronic technologies can be enabled by antiferromagnets, our findings will be an essential guidance for the future magnetism-related science as well as technology.

arXiv comment19 pages, 4 figures

References in corpus (22)

• Anomalous Hall effect
• Antiferromagnetic spintronics
• Topological Hall effect in the A-phase of MnSi
• Crystal Hall effect in Collinear Antiferromagnets
• Large anomalous Hall effect driven by non-vanishing Berry curvature in non-collinear antiferromagnetic Mn3Ge
• Anomalous Hall effect arising from noncollinear antiferromagnetism
• Giant anomalous Nernst effect and quantum-critical scaling in a ferromagnetic semimetal
• Large magneto-optical Kerr effect and imaging of magnetic octupole domains in an antiferromagnetic metal
• Spontaneous anomalous Hall effect arising from an unconventional compensated magnetic phase in a semiconductor
• Itinerant Antiferromagnetism in RuO${}_2$
• Dynamical Multiferroicity
• Anomalous Hall effect and topological defects in antiferromagnetic Weyl semimetals: Mn${}_3$Sn/Ge
• Large magneto-optical Kerr effect in noncollinear antiferromagnets Mn${}_{3}X$ ($X$ = Rh, Ir, or Pt)
• Optical Birefringence and Dichroism of Cuprate Superconductors in the THz regime
• Linear and nonlinear optical responses in the chiral multifold semimetal RhSi
• Higher-Order Nonlinear Anomalous Hall Effects Induced by Berry Curvature Multipoles
• Magnetic Excitations in Non-Collinear Antiferromagnetic Weyl Semimetal $\mathsf{M}{\mathsf{n}}_3\mathsf{Sn}$
• Visualization of Anomalous Ettingshausen Effect in a Ferromagnetic Film: Direct Evidence of Different Symmetry from Spin Peltier Effect
• Permutable SOS (Symmetry Operational Similarity)
• Magnetic structure and high-field magnetization of the distorted kagome lattice antiferromagnet Cs${}_2$Cu${}_3$SnF${}_{12}$
• Linking emergent phenomena and broken symmetries through one-dimensional objects and their dot/cross products
• Topological Surface Magnetism and Neel Vector Control in a Magnetoelectric Antiferromagnet

Cited by in corpus (2)

• Altermagnetism with Non-collinear Spins
• Chiral Floquet Engineering on Topological Fermions in Chiral Crystals