Curved Magnetism in CrI${}_3$

Abstract

Curved magnets attract considerable interest for their unusually rich phase diagram, often encompassing exotic (e.g., topological or chiral) spin states. Micromagnetic simulations are playing a central role in the theoretical understanding of such phenomena; their predictive power, however, rests on the availability of reliable model parameters to describe a given material or nanostructure. Here we demonstrate how non-collinear-spin polarized density-functional theory can be used to determine the flexomagnetic coupling coefficients in real systems. By focusing on monolayer CrI${}_3$, we find a crossover as a function of curvature between a magnetization normal to the surface to a cycloidal state, which we rationalize in terms of effective anisotropy and Dzyaloshinskii-Moriya contributions to the magnetic energy. Our results reveal an unexpectedly large impact of spin-orbit interactions on the curvature-induced anisotropy, which we discuss in the context of existing phenomenological models.

References in corpus (7)

• Curvature effects in statics and dynamics of low dimensional magnets
• Magnetochiral symmetry breaking in a Möbius ring
• Relativistic exchange interactions in CrX${}_3$ (X=Cl, Br, I) monolayers
• Microscopic origin of ferromagnetism in trihalides CrCl${}_3$ and CrI${}_3$
• Strain and electric-field control of spin-spin interactions in monolayer CrI${}_3$
• Ab initio analysis of magnetic properties of prototype B20 chiral magnet FeGe
• Spin flexoelectricity and chiral spin structures in magnetic films

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• Dzyaloshinskii-Moriya interaction and magnetic skyrmions induced by curvature
• Perspective: strain and strain gradient engineering in membranes of quantum materials
• Topological magnon gap engineering in van der Waals CrI${}_3$ ferromagnets
• Relativistic magnetic interactions from non-orthogonal basis sets
• Flexomagnetoelectric effect in Sr2IrO4 thin films
• General time-reversal equivariant neural network potential for magnetic materials
• Cold Seeded Epitaxy and Flexomagnetism in Smooth GdAuGe Membranes Exfoliated from graphene/Ge(111)
• Magnon dispersion and spin transport in CrCl${}_3$ bilayers under different strain-induced magnetic states
• Manipulation by magnetic frustration in ferrotoroidal spin chains via curvature and torsion
• Dynamical response of noncollinear spin systems at constrained magnetic moments
• Spin-orbit torque driven motion of chiral domain walls induced by radial magnetization in nanotube geometry
• Propagation of elastic waves in a flexomagnetic solid
• Magnetoelectricity of Topological Solitons in 2D Magnets