Antichiral Ferromagnetism

Abstract

Here by combining a symmetry-based analysis with numerical computations we predict a new kind of magnetic ordering - antichiral ferromagnetism. The relationship between chiral and antichiral magnetic order is conceptually similar to the relationship between ferromagnetic and antiferromagnetic order. Without loss of generality, we focus our investigation on crystals with full tetrahedral symmetry where chiral interaction terms - Lifshitz invariants - are forbidden by symmetry. However, we demonstrate that leading chirality-related term leads to nontrivial smooth magnetic textures in the form of helix-like segments of alternating opposite chiralities. The unconventional order manifests itself beyond the ground state by stabilizing excitations such as domains and skyrmions in an antichiral form.

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Cited by in corpus (7)

• Activating magnetoelectric optical properties by twisting antiferromagnetic bilayers
• Non-collinear ground state from a four-spin chiral exchange in a tetrahedral magnet
• Antichiral Ferromagnetism
• Quartic asymmetric exchange for two-dimensional ferromagnets with trigonal prismatic symmetry
• Signatures of quartic asymmetric exchange in a class of two dimensional magnets
• Reduced theory of symmetric and antisymmetric exchange interactions in nanowires
• Non-Lifshitz invariants corrections to Dzyaloshinskii-Moriya interaction energy