Chirality-inverted Dzyaloshinskii-Moriya interaction

Abstract

The Dzyaloshinskii-Moriya interaction (DMI) is an antisymmetric exchange interaction, which is responsible for the formation of topologically protected spin textures in chiral magnets. Here, by measuring the dispersion relation of the DM energy, we quantify the atomistic DMI in a model system, i.e., a Co double layer on Ir(001). We unambiguously demonstrate the presence of a chirality-inverted DMI, i.e., a sign change in the chirality index of DMI from negative to positive, when comparing the interaction between nearest neighbors to that between neighbors located at longer distances. The effect is in analogy to the change in the character of the Heisenberg exchange interaction from, e.g., ferromagnetic to antiferromagnetic. We show that the pattern of the atomistic DMI in epitaxial magnetic structures can be very complex and provide critical insights into the nature of DMI. We anticipate that the observed effect is general and occurs in many magnetic nanostructures grown on heavy-element metallic substrates.

arXiv comment4 pages, 3 figures

References in corpus (22)

• Spontaneous Skyrmion Ground States in Magnetic Metals
• Anatomy of Dzyaloshinskii-Moriya Interaction at Co/Pt Interfaces
• Ab-initio calculations of exchange interactions, spin-wave stiffness constants, and Curie temperatures of Fe, Co, and Ni
• Asymmetric Spin-wave Dispersion on Fe(110): Direct Evidence of Dzyaloshinskii--Moriya Interaction
• First- principle calculations of magnetic interactions in correlated systems
• Antiskyrmions stabilized at interfaces by anisotropic Dzyaloshinskii-Moriya interaction
• Hund's rule-driven Dzyaloshinskii-Moriya interaction at 3d-5d interfaces
• Chiral asymmetry of the spin-wave spectra in ultrathin magnetic films
• Berry phase theory of Dzyaloshinskii-Moriya interaction and spin-orbit torques
• Microscopic origin of Heisenberg and non-Heisenberg exchange interactions in ferromagnetic bcc Fe
• Dzyaloshinskii-Moriya interaction and chiral magnetism in 3$d$-5$d$ zig-zag chains: Tight-binding model and ab initio calculations
• Role of Dzyaloshinskii-Moriya interaction for magnetism in transition-metal chains at Pt step-edges
• Dzyaloshinskii-Moriya interaction and spin-orbit torque at the Ir/Co interface
• Comparison of first-principles methods to extract magnetic parameters in ultra-thin films: Co/Pt(111)
• The microscopic origin of DMI in magnetic bilayers and prediction of giant DMI in new bilayers
• An accurate scheme to calculate the interatomic Dzyaloshinskii-Moriya interaction parameters
• Domain wall profiles in Co/Ir${}_n$/Pt(111) ultrathin films: influence of the Dzyaloshinskii-Moriya interaction
• Domain walls and Dzyaloshinskii-Moriya interaction in epitaxial Co/Ir(111) and Pt/Co/Ir(111)
• Probing of the interfacial Heisenberg and Dzyaloshinskii--Moriya exchange interaction by magnon spectroscopy
• Measuring the Dzyaloshinskii-Moriya interaction of the epitaxial Co/Ir(111) interface
• Higher-dimensional Wannier interpolation for the modern theory of the Dzyaloshinskii-Moriya interaction: Application to Co-based trilayers
• Nonlinear Decay of Quantum Confined Magnons in Itinerant Ferromagnets

Cited by in corpus (4)

• Chiral crossroads in $\mathrm{H}{\mathrm{o}}_3\mathrm{Sc}{\mathrm{O}}_6$: a tale of frustration in maple leaf lattice
• Magnons and fundamental magnetic interactions in a ferromagnetic monolayer: The case of Ni monolayer
• Unraveling the Complexity of the Dzyaloshinskii-Moriya Interaction in Layered Magnets: The Full Magnitude and Chirality Control
• Ubiquity of the spin-orbit induced magnon nonreciprocity in ultrathin ferromagnets