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Condensed Matter > Strongly Correlated Electrons
Title: Antichiral Ferromagnetism
(Submitted on 10 Dec 2020 (v1), last revised 22 Dec 2020 (this version, v2))
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.
Submission history
From: Filipp N Rybakov [view email][v1] Thu, 10 Dec 2020 17:21:03 GMT (1005kb,D)
[v2] Tue, 22 Dec 2020 13:55:15 GMT (1020kb,D)
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